Journal articles: 'Vector control Biological control Philippines'

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Christodoulou, Mario. "Biological vector control of mosquito-borne diseases." Lancet Infectious Diseases 11, no. 2 (February 2011): 84–85. http://dx.doi.org/10.1016/s1473-3099(11)70017-2.

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Kamareddine, Layla. "The Biological Control of the Malaria Vector." Toxins 4, no. 9 (September 19, 2012): 748–67. http://dx.doi.org/10.3390/toxins4090748.

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Lacey, Lawrence A., and Brucke K. Orr. "The Role of Biological Control of Mosquitoes in Integrated Vector Control." American Journal of Tropical Medicine and Hygiene 50, no. 6_Suppl (January 1, 1994): 97–115. http://dx.doi.org/10.4269/ajtmh.1994.50.97.

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Espino, Fe, Jesusa Marco, Nelia P. Salazar, Ferdinand Salazar, Ysadora Mendoza, and Aldwin Velazco. "Community-based dengue vector control: experiences in behavior change in Metropolitan Manila, Philippines." Pathogens and Global Health 106, no. 8 (December 2012): 455–60. http://dx.doi.org/10.1179/2047773212y.0000000061.

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Hareem Sajjad and Neelam Arif. "Biological Control of Mosquito Vectors." Scientific Inquiry and Review 3, no. 1 (January 31, 2019): 25–32. http://dx.doi.org/10.32350/sir.31.03.

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The main purpose of this review paper is to study different biological control methods for controlling mosquito vectors. Mosquitoes act as vector for many harmful diseases including malaria, dengue fever, yellow fever, filarial, encephalitis, chikungunya, dengue and poly arthritis. The use of chemical insecticides for controlling mosquitoes is limited because they develop resistance against these insecticides. So, efforts have been made to control the mosquito vectors by eco-friendly techniques. At present, biocontrol agents are used to control the mosquito species with the aim to reduce the impact and cost of insecticide based strategies. These biocontrol agents involve the use of natural enemies including bacteria, fungi, larvivorous fish, protozoans and nematodes. These agents target mosquitoes at different stages of their life cycle. In this paper, we focus on several bio-controlling methods used to reduce the population of mosquito vectors.

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Doloi, Dipika. "A study on certain biological control methods to control and manage vector-borne diseases." International Journal of Mosquito Research 8, no. 1 (January 1, 2021): 31–34. http://dx.doi.org/10.22271/23487941.2021.v8.i1a.497.

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Mishra, Prabhakar, Brij Kishore Tyagi, Natarajan Chandrasekaran, and Amitava Mukherjee. "Biological nanopesticides: a greener approach towards the mosquito vector control." Environmental Science and Pollution Research 25, no. 11 (July 18, 2017): 10151–63. http://dx.doi.org/10.1007/s11356-017-9640-y.

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Arias-Castro, Juddy Heliana, Hector Jairo Martinez-Romero, and Olga Vasilieva. "Biological and Chemical Control of Mosquito Population by Optimal Control Approach." Games 11, no. 4 (December 14, 2020): 62. http://dx.doi.org/10.3390/g11040062.

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This paper focuses on the design and analysis of short-term control intervention measures seeking to suppress local populations of Aedes aegypti mosquitoes, the major transmitters of dengue and other vector-borne infections. Besides traditional measures involving the spraying of larvicides and/or insecticides, we include biological control based on the deliberate introduction of predacious species feeding on the aquatic stages of mosquitoes. From the methodological standpoint, our study relies on application of the optimal control modeling framework in combination with the cost-effectiveness analysis. This approach not only enables the design of optimal strategies for external control intervention but also allows for assessment of their performance in terms of the cost-benefit relationship. By examining numerous scenarios derived from combinations of chemical and biological control measures, we try to find out whether the presence of predacious species at the mosquito breeding sites may (partially) replace the common practices of larvicide/insecticide spraying and thus reduce their negative impact on non-target organisms. As a result, we identify two strategies exhibiting the best metrics of cost-effectiveness and provide some useful insights for their possible implementation in practical settings.

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Pandey, Ritesh, R. N. Singh, and P. N. Pandey. "Mathematical Model for Malaria Transmission and Biological Control." Journal of the Tensor Society 8, no. 01 (June 30, 2009): 159–73. http://dx.doi.org/10.56424/jts.v8i01.10549.

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In this paper, a nonlinear mathematical model for the control of vector borne diseases, like malaria is proposed and analyzed. In the modeling process it is assumed that the mosquito population is controlled by using larvivorous fish, which partially depends on the larva of mosquito population. It is further assumed that the mosquito population grows logistically. The equilibria of the model are obtained and their stability is discussed by using stability theory of differential equations. Further numerical simulation is performed to verify the analytically obtained results.

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Chen-Charpentier, Benito. "Stochastic Modeling of Plant Virus Propagation with Biological Control." Mathematics 9, no. 5 (February 24, 2021): 456. http://dx.doi.org/10.3390/math9050456.

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Plants are vital for man and many species. They are sources of food, medicine, fiber for clothes and materials for shelter. They are a fundamental part of a healthy environment. However, plants are subject to virus diseases. In plants most of the virus propagation is done by a vector. The traditional way of controlling the insects is to use insecticides that have a negative effect on the environment. A more environmentally friendly way to control the insects is to use predators that will prey on the vector, such as birds or bats. In this paper we modify a plant-virus propagation model with delays. The model is written using delay differential equations. However, it can also be expressed in terms of biochemical reactions, which is more realistic for small populations. Since there are always variations in the populations, errors in the measured values and uncertainties, we use two methods to introduce randomness: stochastic differential equations and the Gillespie algorithm. We present numerical simulations. The Gillespie method produces good results for plant-virus population models.

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Adeyeba, O. A., M. K. C. Sridhar, B. O. Fagbemi, and O. O. Kale. "BIOLOGICAL CONTROL AGENTS OF CYCLOPOID COPEPOD, VECTOR OF DRACUNCULIASIS: LABORATORY EXPERIENCE." African Journal of Clinical and Experimental Microbiology 3, no. 2 (February 1, 2002): 98. http://dx.doi.org/10.4314/ajcem.v3i2.7338.

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Tena, Alejandro. "Classical biological control of the “huanglongbing” vector, Trioza erytreae in Europe." Phytopathogenic Mollicutes 12, no. 1 (2022): 48. http://dx.doi.org/10.5958/2249-4677.2022.00013.5.

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Murphy, Amanda K., Ferdinand V. Salazar, Ryan Bonsato, Gemma Uy, Antonietta P. Ebol, Royfrextopher P. Boholst, Callan Davis, et al. "Climate variability and Aedes vector indices in the southern Philippines: An empirical analysis." PLOS Neglected Tropical Diseases 16, no. 6 (June 14, 2022): e0010478. http://dx.doi.org/10.1371/journal.pntd.0010478.

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Background Vector surveillance is an essential public health tool to aid in the prediction and prevention of mosquito borne diseases. This study compared spatial and temporal trends of vector surveillance indices for Aedes vectors in the southern Philippines, and assessed potential links between vector indices and climate factors. Methods We analysed routinely collected larval and pupal surveillance data from residential areas of 14 cities and 51 municipalities during 2013–2018 (House, Container, Breteau and Pupal Indices), and used linear regression to explore potential relationships between vector indices and climate variables (minimum temperature, maximum temperature and precipitation). Results We found substantial spatial and temporal variation in monthly Aedes vector indices between cities during the study period, and no seasonal trend apparent. The House (HI), Container (CI) and Breteau (BI) Indices remained at comparable levels across most surveys (mean HI = 15, mean CI = 16, mean BI = 24), while the Pupal Productivity Index (PPI) was relatively lower in most months (usually below 5) except for two main peak periods (mean = 49 overall). A small proportion of locations recorded high values across all entomological indices in multiple surveys. Each of the vector indices were significantly correlated with one or more climate variables when matched to data from the same month or the previous 1 or 2 months, although the effect sizes were small. Significant associations were identified between minimum temperature and HI, CI and BI in the same month (R2 = 0.038, p = 0.007; R2 = 0.029, p = 0.018; and R2 = 0.034, p = 0.011, respectively), maximum temperature and PPI with a 2-month lag (R2 = 0.031, p = 0.032), and precipitation and HI in the same month (R2 = 0.023, p = 0.04). Conclusions Our findings indicated that larval and pupal surveillance indices were highly variable, were regularly above the threshold for triggering vector control responses, and that vector indices based on household surveys were weakly yet significantly correlated with city-level climate variables. We suggest that more detailed spatial and temporal analyses of entomological, climate, socio-environmental and Aedes-borne disease incidence data are necessary to ascertain the most effective use of entomological indices in guiding vector control responses, and reduction of human disease risk.

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SANG, ZI, ZHIPENG QIU, QINGKAI KONG, and YUN ZOU. "ASSESSMENT OF VECTOR CONTROL AND PHARMACEUTICAL TREATMENT IN REDUCING MALARIA BURDEN: A SENSITIVITY AND OPTIMAL CONTROL ANALYSIS." Journal of Biological Systems 20, no. 01 (March 2012): 67–85. http://dx.doi.org/10.1142/s0218339011500331.

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Vector control and pharmaceutical treatments are currently the main methods of malaria control. To assess their impacts on disease transmission and prevalence, sensitivity and optimal control analysis are performed respectively on a mathematical malaria model. Comparisons are made between the result of sensitivity analysis and that of optimal control analysis. Numerical simulation shows that optimal control strategy is available and cost-efficient. The simulating results also indicates that vector control is always much more beneficial than other anti-malaria measures in an optimal control programme. This further suggests that the results of sensitivity analysis by calculating sensitivity indices cannot help policy-makers to formulate a more effective optimal control programme.

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Ross, Perran A., and Ary A. Hoffmann. "Vector control: Discovery of Wolbachia in malaria vectors." Current Biology 31, no. 11 (June 2021): R738—R740. http://dx.doi.org/10.1016/j.cub.2021.04.038.

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Ligsay, Antonio D., Zypher Jude G. Regencia, Kristan Jela M. Tambio, Michelle Joyce M. Aytona, Alain Jason A. Generale, Grecebio Jonathan D. Alejandro, Jacquiline S. Tychuaco, Lilian A. De las Llagas, Emmanuel S. Baja, and Richard Edward L. Paul. "Efficacy Assessment of Autodissemination Using Pyriproxyfen-Treated Ovitraps in the Reduction of Dengue Incidence in Parañaque City, Philippines: A Spatial Analysis." Tropical Medicine and Infectious Disease 8, no. 1 (January 16, 2023): 66. http://dx.doi.org/10.3390/tropicalmed8010066.

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Dengue is one of the most important vector-borne diseases worldwide and is a significant public health problem in the tropics. Mosquito control continues to be the primary approach to reducing the disease burden and spread of dengue virus (DENV). Aside from the traditional larviciding and adulticiding interventions, autodissemination using pyriproxyfen-treated (AD-PPF) ovitraps is one of the promising methods to complement existing vector control strategies. Our paper assessed the efficacy of AD-PPF in reducing DENV infections in two barangays in Parañaque City. Using saliva samples from the participants from both the control and intervention sites, we collected the seroprevalence data for three months in each of the two years. Spatial analysis was conducted to determine hotspot areas and identify DENV infection distributions across the trial periods. The results showed that the intervention site was identified as having a clustering of DENV infections in Month 0 of Year 1 and shifted to a random dispersion of dengue cases at the end of Month 3 in Year 2. The disappearance of the clustering of the intervention site translates to a decrease in the cases of DENV infection relative to the control site. Furthermore, we also identified that DENV transmission occurred at a small-scale level that did not go beyond 86 m. In conclusion, AD-PPF is suggested to be an effective strategy and may be used as an additional vector control approach, albeit based on this short-term implementation.

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Abdul-Ghani, Rashad, Abdulsalam M. Al-Mekhlafi, and Mogeeb S. Alabsi. "Microbial control of malaria: Biological warfare against the parasite and its vector." Acta Tropica 121, no. 2 (February 2012): 71–84. http://dx.doi.org/10.1016/j.actatropica.2011.11.001.

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Hosack, Geoffrey R., Philippe A. Rossignol, and P. van den Driessche. "The control of vector-borne disease epidemics." Journal of Theoretical Biology 255, no. 1 (November 2008): 16–25. http://dx.doi.org/10.1016/j.jtbi.2008.07.033.

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ROY, PARIMITA, RANJIT KUMAR UPADHYAY, and JASMINE CAUR. "MODELING ZIKA TRANSMISSION DYNAMICS: PREVENTION AND CONTROL." Journal of Biological Systems 28, no. 03 (August 28, 2020): 719–49. http://dx.doi.org/10.1142/s021833902050014x.

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The Zika virus (ZIKV) epidemic is depicted to have high spatial diversity and slow growth, attributable to the dynamics of the mosquito vector and mobility of the human populations. In an effort to understand the transmission dynamics of Zika virus, we formulate a new compartmental epidemic model with a system of seven differential equations and 11 parameters incorporating the decaying transmission rate and study the impact of protection measure on basic public health. We do not fit the model to the observed pattern of spread, rather we use parameter values estimated in the past and examine the extent to which the designed model prediction agrees with the pattern of spread seen in Brazil, via reaction–diffusion modeling. Our work includes estimation of key epidemiological parameters such as basic reproduction number ([Formula: see text], and gives a rough estimate of how many individuals can be typically infected during an outbreak if it occurs in India. We used partial rank correlation coefficient method for global sensitivity analysis to identify the most influential model parameters. Using optimal control theory and Pontryagin’s maximum principle, a control model has been proposed and conditions for the optimal control are determined for the deterministic model of Zika virus. The control functions for the strategies (i) vector-to-human contact reduction and (ii) vector elimination are introduced into the system. Numerical simulations are also performed. This work aimed at understanding the potential extent and timing of the ZIKV epidemic can be used as a template for the analysis of future mosquito-borne epidemics.

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Saleem, Sidra, Haroon Ahmed, Tooba Siddiqui, Seyma Gunyakti Kilinc, Aisha Khan, Muhammad Sohail Afzal, and Sami Simsek. "Reduce Disease Burden of Human Schistosomiasis in Asia Through Biological Control." Mini-Reviews in Medicinal Chemistry 20, no. 12 (July 23, 2020): 1118–32. http://dx.doi.org/10.2174/1389557520666200204114646.

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Schistosomiasis is a chronic parasitic disease caused by a trematode blood fluke of the genus Schistosoma that belongs to the Schistosomatidae family. It is a neglected disease in different regions of Asia. In this review, 218 articles (between 2000 and 2017) related to the topic were collected from PubMed and Google scholar and reviewed. After thoroughly reading collected articles, due to irrelevant topic requirements, 94 articles were excluded. Articles that have data associated with Asian regions are considered. In Asia, the disease is prevalent in China, Philippines, Indonesia, Yemen, Nepal and Laos, etc. While in Pakistan, India and Bangladesh, the disease is not endemic and very few cases were reported. The disease was eliminated from Japan and Iran. The current review highlights the geographical distribution among Asian countries, transmission patterns, diagnosis, control strategies based on the use of anthelmintic plants and management practices implemented in Asia for the control of schistosomiasis. However, new implementations to treat schistosomiasis in humans should be proved to eliminate the disease finally in the future. This review emphasizes the biological control of schistosomiasis for the eradication of the disease from Asia in the near future.

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Muis, Amran. "BIOMASS PRODUCTION AND FORMULATION OF Bacillus subtilis FOR BIOLOGICAL CONTROL." Indonesian Journal of Agricultural Science 7, no. 2 (October 25, 2016): 51. http://dx.doi.org/10.21082/ijas.v7n2.2006.51-56.

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Bacillus subtilis is a widespread bacterium found in soil, water, and air. It controls the growth of certain harmful bacteria and fungi, presumably by competing for nutrients, growth sites on plants, and by directly colonizing and attaching to fungal pathogens. When applied to seeds, it colonizes the developing root system of the plants and continues to live on the root system and provides protection throughout the growing season. The study on biomass production and formulation of B. subtilis for biological control was conducted in the laboratory of Department of Plant Pathology, College of Agriculture, University of the Philippines Los Baños (UPLB-CA), College, Laguna from May to July 2005. The objective of the study was to determine the optimum pH and a good carbon source for biomass production of B. subtilis and to develop a seed treatment formulation of B. subtilis as biological control agent. Results showed that the optimum pH for growth of B. subtilis was pH 6 (1.85 x 109 cfu/ml). In laboratory tests for biomass production using cassava flour, corn flour, rice flour, and brown sugar as carbon sources, it grew best in brown sugar plus yeast extract medium (6.8 x 108 cfu ml-1 in sterile distilled water and 7.8 x 108 cfu ml-1 in coconut water). In test for bacterial biomass carriers, talc proved to be the best in terms of number of bacteria recovered from the seeds (3.98 x 105 cfu seed-1).

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Muis, Amran. "BIOMASS PRODUCTION AND FORMULATION OF Bacillus subtilis FOR BIOLOGICAL CONTROL." Indonesian Journal of Agricultural Science 7, no. 2 (October 25, 2016): 51. http://dx.doi.org/10.21082/ijas.v7n2.2006.p51-56.

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Bacillus subtilis is a widespread bacterium found in soil, water, and air. It controls the growth of certain harmful bacteria and fungi, presumably by competing for nutrients, growth sites on plants, and by directly colonizing and attaching to fungal pathogens. When applied to seeds, it colonizes the developing root system of the plants and continues to live on the root system and provides protection throughout the growing season. The study on biomass production and formulation of B. subtilis for biological control was conducted in the laboratory of Department of Plant Pathology, College of Agriculture, University of the Philippines Los Baños (UPLB-CA), College, Laguna from May to July 2005. The objective of the study was to determine the optimum pH and a good carbon source for biomass production of B. subtilis and to develop a seed treatment formulation of B. subtilis as biological control agent. Results showed that the optimum pH for growth of B. subtilis was pH 6 (1.85 x 109 cfu/ml). In laboratory tests for biomass production using cassava flour, corn flour, rice flour, and brown sugar as carbon sources, it grew best in brown sugar plus yeast extract medium (6.8 x 108 cfu ml-1 in sterile distilled water and 7.8 x 108 cfu ml-1 in coconut water). In test for bacterial biomass carriers, talc proved to be the best in terms of number of bacteria recovered from the seeds (3.98 x 105 cfu seed-1).

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Thomsen, Edward K., Clare Strode, Kay Hemmings, Angela J. Hughes, Emmanuel Chanda, Mulenga Musapa, Mulakwa Kamuliwo, et al. "Underpinning Sustainable Vector Control through Informed Insecticide Resistance Management." PLoS ONE 9, no. 6 (June 16, 2014): e99822. http://dx.doi.org/10.1371/journal.pone.0099822.

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Jamal, Qazi Mohammad Sajid, and Varish Ahmad. "Lysinibacilli: A Biological Factories Intended for Bio-Insecticidal, Bio-Control, and Bioremediation Activities." Journal of Fungi 8, no. 12 (December 8, 2022): 1288. http://dx.doi.org/10.3390/jof8121288.

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Microbes are ubiquitous in the biosphere, and their therapeutic and ecological potential is not much more explored and still needs to be explored more. The bacilli are a heterogeneous group of Gram-negative and Gram-positive bacteria. Lysinibacillus are dominantly found as motile, spore-forming, Gram-positive bacilli belonging to phylum Firmicutes and the family Bacillaceae. Lysinibacillus species initially came into light due to their insecticidal and larvicidal properties. Bacillus thuringiensis, a well-known insecticidal Lysinibacillus, can control many insect vectors, including a malarial vector and another, a Plasmodium vector that transmits infectious microbes in humans. Now its potential in the environment as a piece of green machinery for remediation of heavy metal is used. Moreover, some species of Lysinibacillus have antimicrobial potential due to the bacteriocin, peptide antibiotics, and other therapeutic molecules. Thus, this review will explore the biological disease control abilities, food preservative, therapeutic, plant growth-promoting, bioremediation, and entomopathogenic potentials of the genus Lysinibacillus.

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Kaltsum, Ummi, Yuanita Windusari, and Hamzah Hasyim. "Pengendalian Vektor dan Eliminasi Malaria: Literature Review." Jurnal Ilmiah Universitas Batanghari Jambi 22, no. 3 (October 31, 2022): 1709. http://dx.doi.org/10.33087/jiubj.v22i3.2768.

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Malaria is an important tropical parasitic disease in the world, and is still a major health problem. Malaria vector control is one of the efforts to prevent and control malaria which aims to break the chain of transmission of malaria. Vector control includes actions directed against disease vectors, which are intended to limit their ability to transmit disease by protecting areas that are known to be receptive to transmission. Identify opportunities in vector control aspects that can be utilized by the state in an effort to achieve zero malaria cases and achieve elimination certification by 2030. This research method is a descriptive observational study using a literature review design, with the NCBI database. In the elimination phase, the objective of vector control is to reduce the vector capacity of the local vector population below the critical threshold required to maintain transmission. In order to achieve effective vector control towards elimination, among various confounding factors, it is important to identify challenges related to the biological and bionomic character of the vector and associated operational issues.

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Madeira, Newton G., Carlos Alberto Macharelli, José Figueiredo Pedras, and Maria C. N. Delfino. "Education in primary school as a strategy to control dengue." Revista da Sociedade Brasileira de Medicina Tropical 35, no. 3 (June 2002): 221–26. http://dx.doi.org/10.1590/s0037-86822002000300004.

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The proliferation of Aedes aegypti, a species of mosquito that is the vector of the dengue pathogen, is being augmented by the population's lack of care in allowing the formation of larval habitats. One form of controlling dengue is the distribution of information on the mosquito to improve awareness and to provide the means necessary for the elimination of its reproductive habitats. To evaluate a teaching method concerning the vector and dengue, students from the 5th and 6th years of primary education were compared before and after didactic intervention with a group of control students. The students who received intervention were more successful in identifying the stages of the cycle, biological and morphological characteristics of the adult insect and the importance of the mosquito in health issues. The didactic intervention was successful in developing knowledge leading to increased awareness of the importance of preventative measures that should be taken against the vector and the disease.

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Putri, Novia Wirna, and Sevilla Ukhtil Huvaid. "GAMBARAN PARTISIPASI MASYARAKAT DALAM PROGRAM PENGENDALIAN VEKTOR DBD DI WILAYAH KERJA PUSKESMAS AIR DINGIN." Jurnal Riset Hesti Medan Akper Kesdam I/BB Medan 3, no. 2 (December 1, 2018): 48. http://dx.doi.org/10.34008/jurhesti.v3i2.44.

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Dengue Hemorrhagic Fever (DHF) is one of the important public health problems in Indonesia. Cases of dengue fever in the city of Padang in 2015 experienced a significant increase in the amount of 1,126 cases (IR = 124.8 per 100,000 population) with a total death of 8 people (CFR = 0.7%). The Cold Water Health Center is one of the health centers in the city of Padang with a work area that has a significant increase in dengue cases in 2015 with an IR of 361.5 per 100,000 population. The research objective was to analyze community participation in the DHF vector control program in the working area of the Cold Water Health Center in Padang City in 2018. This type of research was descriptive research. The sample is 99 people taken by proportional random sampling technique. Data analysis includes univariate analysis of community participation in vector control, namely environmental modification, environmental manipulation, physical control, chemical control, biological control and the existence of larvae. The results showed that 52.5% of respondents were larvae positive, 32.3% of respondents belonged to the bad category of environmental modification, 58.6% of respondents belong to the bad category of environmental manipulation, amounting to 30.3% of respondents classified in the bad category is physical control, 78.8% of respondents belong to the bad category of chemical control, and 35.4% of respondents belong to the bad category of biological control in the DHF vector control program in the working area of the Cold Water Health Center. It is recommended to the Air Dingin Health Center to be able to socialize to the public regarding DHF vector control programs both in aspects of environmental modification, environmental manipulation, physical, chemical and biological control.Keyword: DBD, vector, environment

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Nam, V. S., J. W. Reid, N. T. Yen, B. H. Kay, and M. Holynska. "National progress in dengue vector control in Vietnam: survey for Mesocyclops (Copepoda), Micronecta (Corixidae), and fish as biological control agents." American Journal of Tropical Medicine and Hygiene 62, no. 1 (January 1, 2000): 5–10. http://dx.doi.org/10.4269/ajtmh.2000.62.5.

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Abhisubesh Vijayakumar, Sahadiya Mandodan, Hemaladkshmi Padmanaban, Bhagyashree Bora, Manikandan Sivaprakasam, Kakhuangailiu Gangmei, Jibi Lukose, et al. "A review of vectors, vector borne diseases, vector control and their impact on public health." World Journal of Advanced Science and Technology 2, no. 2 (October 30, 2022): 001–11. http://dx.doi.org/10.53346/wjast.2022.2.2.0046.

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Mosquitoes are most important insect vectors for human disease transmission. Dengue, yellow fever, chikungunya, and zika are all spread by Aedes mosquitoes in many parts of the world. The primary vector of human malaria transmission is Anopheles. Culex is responsible for the transmission of Japanese encephalitis, lymphatic filariasis and West Nile virus fever. Synthetic pesticides have been successfully utilized in mosquito-control programmes for several decades. However, there are a number of disadvantages to the chemical method. As a result, there has been a rise in concern in the usage of biological agents for mosquito control in recent years. Because of their highly effective mosquitocidal activity, Bacillus sphaericus and Bacillus thuringiensis israelensis have been utilized extensively. While insecticide-based interventions have successfully reduced mosquito populations for a number of years, the reliance on a few number of insecticides has now led to the evolution of resistance. So there is a need to search for novel mosquitocidal bacteria for control the mosquito species. Since soil is one of the world's most diversified environments in which bacteria and fungi are abundant, screening of soil samples for isolation of novel mosquitocidal bacteria is attempted.

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Showler, Allan T., and Perot Saelao. "Integrative Alternative Tactics for Ixodid Control." Insects 13, no. 3 (March 18, 2022): 302. http://dx.doi.org/10.3390/insects13030302.

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Ixodids (hard ticks), ectoparasitic arthropods that vector the causal agents of many serious diseases of humans, domestic animals, and wildlife, have become increasingly difficult to control because of the development of resistance against commonly applied synthetic chemical-based acaricides. Resistance has prompted searches for alternative, nonconventional control tactics that can be used as part of integrated ixodid management strategies and for mitigating resistance to conventional acaricides. The quest for alternative control tactics has involved research on various techniques, each influenced by many factors, that have achieved different degrees of success. Alternative approaches include cultural practices, ingested and injected medications, biological control, animal- and plant-based substances, growth regulators, and inert desiccant dusts. Research on biological control of ixodids has mainly focused on predators, parasitoid wasps, infective nematodes, and pathogenic bacteria and fungi. Studies on animal-based substances have been relatively limited, but research on botanicals has been extensive, including whole plant, extract, and essential oil effects on ixodid mortality, behavior, and reproduction. The inert dusts kaolin, silica gel, perlite, and diatomaceous earth are lethal to ixodids, and they are impervious to environmental degradation, unlike chemical-based toxins, remaining effective until physically removed.

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Ogunlade, Samson T., Michael T. Meehan, Adeshina I. Adekunle, Diana P. Rojas, Oyelola A. Adegboye, and Emma S. McBryde. "A Review: Aedes-Borne Arboviral Infections, Controls and Wolbachia-Based Strategies." Vaccines 9, no. 1 (January 8, 2021): 32. http://dx.doi.org/10.3390/vaccines9010032.

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Arthropod-borne viruses (Arboviruses) continue to generate significant health and economic burdens for people living in endemic regions. Of these viruses, some of the most important (e.g., dengue, Zika, chikungunya, and yellow fever virus), are transmitted mainly by Aedes mosquitoes. Over the years, viral infection control has targeted vector population reduction and inhibition of arboviral replication and transmission. This control includes the vector control methods which are classified into chemical, environmental, and biological methods. Some of these control methods may be largely experimental (both field and laboratory investigations) or widely practised. Perceptively, one of the biological methods of vector control, in particular, Wolbachia-based control, shows a promising control strategy for eradicating Aedes-borne arboviruses. This can either be through the artificial introduction of Wolbachia, a naturally present bacterium that impedes viral growth in mosquitoes into heterologous Aedes aegypti mosquito vectors (vectors that are not natural hosts of Wolbachia) thereby limiting arboviral transmission or via Aedes albopictus mosquitoes, which naturally harbour Wolbachia infection. These strategies are potentially undermined by the tendency of mosquitoes to lose Wolbachia infection in unfavourable weather conditions (e.g., high temperature) and the inhibitory competitive dynamics among co-circulating Wolbachia strains. The main objective of this review was to critically appraise published articles on vector control strategies and specifically highlight the use of Wolbachia-based control to suppress vector population growth or disrupt viral transmission. We retrieved studies on the control strategies for arboviral transmissions via arthropod vectors and discussed the use of Wolbachia control strategies for eradicating arboviral diseases to identify literature gaps that will be instrumental in developing models to estimate the impact of these control strategies and, in essence, the use of different Wolbachia strains and features.

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Ogunlade, Samson T., Michael T. Meehan, Adeshina I. Adekunle, Diana P. Rojas, Oyelola A. Adegboye, and Emma S. McBryde. "A Review: Aedes-Borne Arboviral Infections, Controls and Wolbachia-Based Strategies." Vaccines 9, no. 1 (January 8, 2021): 32. http://dx.doi.org/10.3390/vaccines9010032.

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Arthropod-borne viruses (Arboviruses) continue to generate significant health and economic burdens for people living in endemic regions. Of these viruses, some of the most important (e.g., dengue, Zika, chikungunya, and yellow fever virus), are transmitted mainly by Aedes mosquitoes. Over the years, viral infection control has targeted vector population reduction and inhibition of arboviral replication and transmission. This control includes the vector control methods which are classified into chemical, environmental, and biological methods. Some of these control methods may be largely experimental (both field and laboratory investigations) or widely practised. Perceptively, one of the biological methods of vector control, in particular, Wolbachia-based control, shows a promising control strategy for eradicating Aedes-borne arboviruses. This can either be through the artificial introduction of Wolbachia, a naturally present bacterium that impedes viral growth in mosquitoes into heterologous Aedes aegypti mosquito vectors (vectors that are not natural hosts of Wolbachia) thereby limiting arboviral transmission or via Aedes albopictus mosquitoes, which naturally harbour Wolbachia infection. These strategies are potentially undermined by the tendency of mosquitoes to lose Wolbachia infection in unfavourable weather conditions (e.g., high temperature) and the inhibitory competitive dynamics among co-circulating Wolbachia strains. The main objective of this review was to critically appraise published articles on vector control strategies and specifically highlight the use of Wolbachia-based control to suppress vector population growth or disrupt viral transmission. We retrieved studies on the control strategies for arboviral transmissions via arthropod vectors and discussed the use of Wolbachia control strategies for eradicating arboviral diseases to identify literature gaps that will be instrumental in developing models to estimate the impact of these control strategies and, in essence, the use of different Wolbachia strains and features.

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Aneha. K, Hemaladkshmi Padmanaban, Bhagyashree Bora, Manikandan Sivaprakasam, Kakhuangailiu Gangmei, Jibi Lukose, Abhisubesh Vijayakumar, et al. "A review on biological mosquito control measures-past, present and future." World Journal of Advanced Research and Reviews 16, no. 1 (October 30, 2022): 302–10. http://dx.doi.org/10.30574/wjarr.2022.16.1.1032.

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Over 40% of the world's population is under danger from mosquito transmitted diseases, which are a growing global health challenge. Since 2000, malaria control has made significant progress, but of late it has slowed down. Aedes-borne arbovirus risk is also rising quickly due to the remarkable expansion of the dengue and chikungunya viruses, yellow fever outbreaks, and the Zika virus pandemic. To counteract this issues people used many vector control measures. Synthetic pesticides play a significant role in mosquito larval and adult control strategies, although their deployment is hampered by the development of resistance. As an alternative, various biological measures are being used including bacterial bio pesticides. They are extremely effective at controlling larvae due to their lack of resistance development and environmental friendliness. In this present review various biological control measures used for mosquito control are discussed.

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Bos, Robert. "New approaches to disease vector control in the context of sustainable development." Cadernos de Saúde Pública 8, no. 3 (September 1992): 240–48. http://dx.doi.org/10.1590/s0102-311x1992000300003.

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Faced with problems that are specific to the health sector and ones associated with issues of sustainability, programmes for the control of vector-borne diseases are increasingly resorting to environmental management measures to reduce populations of disease vectors as pan of an integrated control approach. The broader problems on the interface between environment and development that need to be addressed in the context of vector control include accelerated development of natural resources, demographic changes in rural populations and rapid urbanization. Disease vectors need to be recognized as biological risk factors to human health in the environment, and for a sustainable implementation of vector control measures, these should be made an integral pan of the development process. This requires modifications in the policy framework, expansion of our knowledge base, development of operational methods and techniques and a shift in emphasis in training and education.

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Soares, Aline Souza, Lara Teixeira Melo Costa, Cristina Almeida da Silva, Suetônio Fernandes dos Santos, and Raimundo Wagner de Souza Aguiar. "Bioprospecting of Bacillus thuringiensis in the control of Aedes aegypti larvae." Brazilian Journal of Biological Sciences 7, no. 16 (2020): 175–91. http://dx.doi.org/10.21472/bjbs(2020)071605.

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Aedes aegypti (Diptera: Culicidae) is the main vector of Dengue, Zika and Chikungunya, diseases that have attracted the attention of scientific society and the population in general, due to epidemiological outbreaks and numerous health hazards and the imminent risk of death. Much has been discussed about more efficient forms of control for this mosquito, considering that the chemical control, currently used, has been causing impacts on the environment and the health of the population. Thus, alternative methods have been evaluated. Among them, biological control through products formulated from Bacillus thuringiensis has stood out, as biotechnological advances have allowed to improve and enhance the products already on the market, as well as to develop new bioinsecticides from the entomopathogenic proteins produced by these microorganisms, aiming to make the larvae control more and more effective. To this end, this study aimed to carry out a bibliographic survey on the use of Bacillus thuringiensis as a form of biological control of Aedes aegypti larvae, due to the need to use safer and more effective methods of control for disease vector insects.

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Braverman, Elena, and Daniel Franco. "Stabilization of Structured Populations via Vector Target-Oriented Control." Bulletin of Mathematical Biology 79, no. 8 (June 12, 2017): 1759–77. http://dx.doi.org/10.1007/s11538-017-0305-2.

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Donald, Claire, Margus Varjak, Eric Aguiar, João Marques, Vattipally Sreenu, Esther Schnettler, and Alain Kohl. "Antiviral RNA Interference Activity in Cells of the Predatory Mosquito, Toxorhynchites amboinensis." Viruses 10, no. 12 (December 6, 2018): 694. http://dx.doi.org/10.3390/v10120694.

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Arthropod vectors control the replication of arboviruses through their innate antiviral immune responses. In particular, the RNA interference (RNAi) pathways are of notable significance for the control of viral infections. Although much has been done to understand the role of RNAi in vector populations, little is known about its importance in non-vector mosquito species. In this study, we investigated the presence of an RNAi response in Toxorhynchites amboinensis, which is a non-blood feeding species proposed as a biological control agent against pest mosquitoes. Using a derived cell line (TRA-171), we demonstrate that these mosquitoes possess a functional RNAi response that is active against a mosquito-borne alphavirus, Semliki Forest virus. As observed in vector mosquito species, small RNAs are produced that target viral sequences. The size and characteristics of these small RNAs indicate that both the siRNA and piRNA pathways are induced in response to infection. Taken together, this data suggests that Tx. amboinensis are able to control viral infections in a similar way to natural arbovirus vector mosquito species. Understanding their ability to manage arboviral infections will be advantageous when assessing these and similar species as biological control agents.

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Khamis, Doran, Claire El Mouden, Klodeta Kura, and Michael B. Bonsall. "Ecological effects on underdominance threshold drives for vector control." Journal of Theoretical Biology 456 (November 2018): 1–15. http://dx.doi.org/10.1016/j.jtbi.2018.07.024.

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Ritchie, Scott A., and Kyran M. Staunton. "Reflections from an old Queenslander: can rear and release strategies be the next great era of vector control?" Proceedings of the Royal Society B: Biological Sciences 286, no. 1905 (June 26, 2019): 20190973. http://dx.doi.org/10.1098/rspb.2019.0973.

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In this perspective, I discuss the great eras of vector control, centring on Aedes aegypti , the primary vector of dengue, Zika and several other viruses. Since the discovery and acceptance of the role of mosquitoes as vectors of disease agents, several significant strategies have been developed and deployed to control them and the diseases they transmit. Environmental management, insecticides and, to a lesser extent, biological control have emerged as great eras of vector control. In the past decade, the release of massive numbers of specifically modified mosquitoes that mate with wild populations has emerged as a significant new strategy to fight vector-borne diseases. These reared and released mosquitoes have been modified by the addition of a symbiont (e.g. Wolbachia bacteria), radiation or introduction of a genetic construct to either sterilize the wild mosquitoes they mate with, crashing the population, or to reduce the wild population's capacity to vector pathogens. Will these new rear and release strategies become the next great era of vector control? From my vantage point as a dengue control manager and researcher involved in two Wolbachia programmes, I will discuss the hurdles that rear and release programmes face to gain widespread acceptance and success.

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Noumsi, I. M. Kengne, A. Akoa, R. Atangana Eteme, J. Nya, P. Ngniado, T. Fonkou, and F. Brissaud. "Mosquito development and biological control in a macrophyte-based wastewater treatment plant." Water Science and Technology 51, no. 12 (June 1, 2005): 201–4. http://dx.doi.org/10.2166/wst.2005.0462.

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A one-year study of the proliferation of mosquito in a Pistia stratiotes-based waste stabilization ponds in Cameroon revealed that Mansonia and Culex were the main breeding genera with about 55% and 42% of the total imagoes respectively. Though the ponds represent a favorable breeding ground for mosquitoes, only 0.02% of captured imagoes was Anopheles gambiae, suggesting that this wastewater treatment plant does not significantly contribute to the development of the malaria vector in the area. Gambusia sp. introduced to control mosquito population in the ponds acclimatized relatively well in most of the ponds (B3–B7) and their feeding rate without any diet ranged from 15.0 to 50.2 larvae/day for a single fish.

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Gardner, Lauren M., and Sahotra Sarkar. "Risk of Dengue Spread from the Philippines through International Air Travel." Transportation Research Record: Journal of the Transportation Research Board 2501, no. 1 (January 2015): 25–30. http://dx.doi.org/10.3141/2501-04.

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Epidemics of dengue fever occur every 3 to 4 years in the Philippines. The risk of a dengue fever outbreak in the Philippines has been heightened since Typhoon Haiyan struck the region in November 2013 because recovery efforts have been slow to progress. The structural damage caused by the typhoon resulted in an abundance of standing water, which can serve as mosquito breeding grounds. Should an outbreak of dengue occur, infected travelers departing the Philippines pose a risk because they may introduce the dengue virus into local vector populations (of Aedes aegypti and Aedes albopictus) at their destinations. This study quantifies the risk posed by potentially infected travelers departing the Philippines by using a network model that incorporates predictive species distribution models, demographic features of destination areas, and air traffic volumes. The analysis reveals that a majority of travelers departing Philippine airports deplane in regions suitable for harboring Aedes aegypti or Aedes albopictus; this factor increases the likelihood of further spread of the disease if an outbreak were to occur. Because it is impractical to implement all possible monitoring and control measures at all locations connected to the Philippines, this analysis ranks the set of candidates and thus allows surveillance resources to be optimally deployed.

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Golstein, Catherine, Pascal Boireau, and Jean-Christophe Pagès. "Benefits and limitations of emerging techniques for mosquito vector control." Comptes Rendus Biologies 342, no. 7-8 (September 2019): 270–72. http://dx.doi.org/10.1016/j.crvi.2019.09.024.

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Hughes, Ryan N., Konstantin I. Bakhurin, Elijah A. Petter, Glenn D. R. Watson, Namsoo Kim, Alexander D. Friedman, and Henry H. Yin. "Ventral Tegmental Dopamine Neurons Control the Impulse Vector during Motivated Behavior." Current Biology 30, no. 14 (July 2020): 2681–94. http://dx.doi.org/10.1016/j.cub.2020.05.003.

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Sullivan, William. "Vector Control: Wolbachia Expands Its Protective Reach from Humans to Plants." Current Biology 30, no. 24 (December 2020): R1489—R1491. http://dx.doi.org/10.1016/j.cub.2020.11.005.

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Martinez, Julien, Alicia Showering, Catherine Oke, Robert T. Jones, and James G. Logan. "Differential attraction in mosquito–human interactions and implications for disease control." Philosophical Transactions of the Royal Society B: Biological Sciences 376, no. 1818 (December 28, 2020): 20190811. http://dx.doi.org/10.1098/rstb.2019.0811.

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Mosquito-borne diseases are a major burden on human health worldwide and their eradication through vector control methods remains challenging. In particular, the success of vector control interventions for targeting diseases such as malaria is under threat, in part due to the evolution of insecticide resistance, while for other diseases effective control solutions are still lacking. The rate at which mosquitoes encounter and bite humans is a key determinant of their capacity for disease transmission. Future progress is strongly reliant on improving our understanding of the mechanisms leading to a mosquito bite. Here, we review the biological factors known to influence the attractiveness of mosquitoes to humans, such as body odour, the skin microbiome, genetics and infection by parasites. We identify the knowledge gaps around the relative contribution of each factor, and the potential links between them, as well as the role of natural selection in shaping vector–host–parasite interactions. Finally, we argue that addressing these questions will contribute to improving current tools and the development of novel interventions for the future. This article is part of the theme issue ‘Novel control strategies for mosquito-borne diseases'.

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Horstick, Olaf, and Silvia Runge-Ranzinger. "Multisectoral approaches for the control of vector-borne diseases, with particular emphasis on dengue and housing." Transactions of The Royal Society of Tropical Medicine and Hygiene 113, no. 12 (April 29, 2019): 823–28. http://dx.doi.org/10.1093/trstmh/trz020.

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Abstract The Sustainable Development Goals suggest an intersectoral approach for development and health, including for vector-borne diseases. Evidence-based policy recommendations exist for malaria and housing, but not for other, more underfunded, vector-borne diseases. This review aims to stimulate the process for developing policy recommendations for other vector-borne diseases and housing with the process as it was developed for dengue and Aedes control as an example and with suggestions for steps necessary for other vector-borne diseases. For dengue, some basic research on the efficacy of vector control in relation to housing exists, summary evidence highlights the lack of evidence and efficacy and policy recommendations remain difficult. For other vector-borne diseases, few studies have focused on protecting the house, combinations of effective interventions (e.g. intradomiciliary residual spraying, insecticide-treated materials and treatment of larval habitats with biological and chemical methods, which have proven to be effective) have not been studied and summary evidence is non-existent. In order to recommend vector control to protect the house against vector-borne diseases, basic research and summary evidence are needed, with an appropriate combination of the most efficacious interventions and linked to improvement of housing itself. Standards for such studies need to be developed.

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Moin, Sarmad. "Contemporary Resistance Status of Anopheles Stephensi against Insecticides in District Dungarpur, Rajasthan, India." Journal of Communicable Diseases 53, no. 03 (September 30, 2021): 153–58. http://dx.doi.org/10.24321/0019.5138.202151.

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Pyrethroids are powerful insecticides used in the vector control program with impregnated mesh, and residual indoor sprays. However, resistance to insecticide reduces the effectiveness. The present susceptibility study carried out against theAnopheles Stephensi to monitor the sensitivity conditions of An. Stephensi vector, which raises the need to understand the state of vector resistance in the Dungarpur region of Rajasthan, India in order to better report vector-based interventions. The sensitivity study was carried out by the WHO standard method using recommended diagnostic doses of DDT, alpha-cypermethrin, permethrin, and deltamethrin. An. Stephensi showed resistance to DDT from the entire study while sensitive to alpha-cypermethrin, permethrin, and deltamethrin. The study looks at the selection and circulation of the appropriate insecticide’s molecule for a vector control program as insecticide need constant monitoring to develop effective vector control strategies such as improving insecticide by applying integrated biological and ecological methods.

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Lucia Maria Ribeiro, Ana. "Oxydoras kneri as a Potential Candidate for the Biological Control of Mosquito-Vector Tropical Diseases." Open Entomology Journal 7, no. 1 (September 6, 2013): 23–28. http://dx.doi.org/10.2174/1874407920130527001.

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Tran, Vu Phong, Sinh Nam Vu, N. Tuno, H. Kawada, and M. Takagi. "78 Community programs using biological agent-Mesocyclops (Crustaceae-Copepoda) for dengue vector control in Vietnam." Medical Entomology and Zoology 55, Supplement (2004): 70. http://dx.doi.org/10.7601/mez.55.70_2.

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Ogunlade, Samson T., Michael T. Meehan, Adeshina I. Adekunle, and Emma S. McBryde. "A Systematic Review of Mathematical Models of Dengue Transmission and Vector Control: 2010–2020." Viruses 15, no. 1 (January 16, 2023): 254. http://dx.doi.org/10.3390/v15010254.

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Vector control methods are considered effective in averting dengue transmission. However, several factors may modify their impact. Of these controls, chemical methods, in the long run, may increase mosquitoes’ resistance to chemicides, thereby decreasing control efficacy. The biological methods, which may be self-sustaining and very effective, could be hampered by seasonality or heatwaves (resulting in, e.g., loss of Wolbachia infection). The environmental methods that could be more effective than the chemical methods are under-investigated. In this study, a systematic review is conducted to explore the present understanding of the effectiveness of vector control approaches via dengue transmission models.

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Journal articles on the topic 'Vector control Biological control Philippines'

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