Literatura científica selecionada sobre o tema "Virus chikungunya – Transmission"
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Artigos de revistas sobre o assunto "Virus chikungunya – Transmission"
Magalhaes, Tereza, Alexis Robison, Michael Young, William Black, Brian Foy, Gregory Ebel e Claudia Rückert. "Sequential Infection of Aedes aegypti Mosquitoes with Chikungunya Virus and Zika Virus Enhances Early Zika Virus Transmission". Insects 9, n.º 4 (1 de dezembro de 2018): 177. http://dx.doi.org/10.3390/insects9040177.
Texto completo da fonteTsetsarkin, Konstantin A., Rubing Chen e Scott C. Weaver. "Interspecies transmission and chikungunya virus emergence". Current Opinion in Virology 16 (fevereiro de 2016): 143–50. http://dx.doi.org/10.1016/j.coviro.2016.02.007.
Texto completo da fonteSingh, Anil Kumar, Manisha Soni, Ankita Agarwal, Paban Kumar Dash, Manmohan Parida e Natarajan Gopalan. "Vertical Transmission of Chikungunya virus in Aedes aegypti Mosquitoes from Northern India". Defence Life Science Journal 1, n.º 2 (7 de outubro de 2016): 184. http://dx.doi.org/10.14429/dlsj.1.10744.
Texto completo da fonteAnnisa, Dyah Retno, Endang Srimurni Kusmintarsih e Trisnowati Budi Ambarningrum. "Reverse Transcriptase PCR (Rt-PCR) for Detection of Dengue and Chikungunya Virus of Mosquito Aedes aegypti in Sokaraja". BioEksakta : Jurnal Ilmiah Biologi Unsoed 2, n.º 1 (29 de abril de 2020): 56. http://dx.doi.org/10.20884/1.bioe.2020.2.1.1811.
Texto completo da fonteYang, Hyun Mo. "Comparison between chikungunya and dengue viruses transmission based on a mathematical model". International Journal of Biomathematics 10, n.º 06 (4 de abril de 2017): 1750087. http://dx.doi.org/10.1142/s1793524517500875.
Texto completo da fonteHo, Yi-Jung, Yu-Ming Wang, Jeng-wei Lu, Tzong-Yuan Wu, Liang-In Lin, Szu-Cheng Kuo e Chang-Chi Lin. "Suramin Inhibits Chikungunya Virus Entry and Transmission". PLOS ONE 10, n.º 7 (24 de julho de 2015): e0133511. http://dx.doi.org/10.1371/journal.pone.0133511.
Texto completo da fonteRobillard, Pierre-Yves, Brahim Boumahni, Patrick Gérardin, Alain Michault, Alain Fourmaintraux, Isabelle Schuffenecker, Magali Carbonnier et al. "Transmission verticale materno-fœtale du virus chikungunya". La Presse Médicale 35, n.º 5 (maio de 2006): 785–88. http://dx.doi.org/10.1016/s0755-4982(06)74690-5.
Texto completo da fonteTouret, Yasmina, Hanitra Randrianaivo, Alain Michault, Isabelle Schuffenecker, Edouard Kauffmann, Yann Lenglet, Georges Barau e Alain Fourmaintraux. "Transmission materno-fœtale précoce du virus Chikungunya". La Presse Médicale 35, n.º 11 (novembro de 2006): 1656–58. http://dx.doi.org/10.1016/s0755-4982(06)74874-6.
Texto completo da fonteTouret, Yasmina, Hanitra Randrianaivo, Alain Michault, Isabelle Schuffenecker, Edouard Kauffmann, Yann Lenglet, Georges Barau e Alain Fourmaintraux. "Transmission materno-fœtale précoce du virus Chikungunya". La Presse Médicale 35, n.º 1-12 (novembro de 2006): 1664–66. http://dx.doi.org/10.1016/j.lpm.2006.10.001.
Texto completo da fonteHrnjaković Cvjetković, Ivana, Tamaš Petrović, Dušan Petrić, Dejan Cvjetković, Gordana Kovačević, Jelena Radovanov, Aleksandra Jovanović Galović et al. "SEROPREVALENCE OF MOSQUITO-BORN AND TICK-BORN MICROORGANISMS IN HUMAN POPULATION OF SOUTH BACKA DISTRICT". Archives of Veterinary Medicine 9, n.º 1 (6 de novembro de 2016): 23–30. http://dx.doi.org/10.46784/e-avm.v9i1.94.
Texto completo da fonteTeses / dissertações sobre o assunto "Virus chikungunya – Transmission"
Yapa, Badal Madiththegedara Chamini Randika Wimalasiri. "Chikungunya virus transmission dynamics and immune responses in mosquitoes". Thesis, Queensland University of Technology, 2020. https://eprints.qut.edu.au/206132/1/Badal%20Madiththegedara%20Chamini%20Randika%20Yapa%20Thesis.pdf.
Texto completo da fonteWhite, Timothy William. "Identifying drivers of Chikungunya virus transmission in the Asia-Pacific". Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/225936/1/Timothy_White_Thesis.pdf.
Texto completo da fonteBellone, Rachel. "Aspects moléculaires de l'influence de la température sur la transmission du virus du chikungunya par le moustique Aedes albopictus". Electronic Thesis or Diss., Sorbonne université, 2021. http://www.theses.fr/2021SORUS072.
Texto completo da fonteThe chikungunya virus (CHIKV) is an emerging mosquito-borne Alphavirus which has widely spread around the world in the last two decades. The virus is transmitted to human hosts by Aedes mosquitoes, including the invasive species Aedes albopictus, which has today conquered more than half of the French territory. As a vector of several viral pathogens, Ae. albopictus poses a real threat to the health authorities. The emergence of arboviruses such as CHIKV, often results from a complex combination of both intrinsic and extrinsic factors. Since mosquitoes are poikilothermic ectotherms (i.e., internal body temperature is not constant and depends on environmental temperatures), they are acutely susceptible to temperature variations. The relation between temperature and arbovirus transmission is a complex phenomenon that remains poorly understood, especially at the molecular level. The aim of our project is to better understand how temperature affects mosquito-virus interactions and influences transmission cycles. We study the molecular aspects of CHIKV, its vector Ae. albopictus and their interactions under the influence of temperature. Our results show that temperature affects CHIKV evolution as well as mosquito genetic expression and microbial composition, especially in response to infection. These data provide important information on how vector systems can be affected by temperature. Understanding the mechanisms underlying virus-mosquito interactions with the environment is essential in order to prevent epidemics
Riou, Julien. "Épidémiologie comparée et prédictive des épidémies de maladies transmises par les moustiques du genre Aedes : application aux virus Zika et chikungunya A comparative analysis of Chikungunya and Zika transmission of emerging Aedes-transmitted epidemics using historical data". Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS356.
Texto completo da fonteTwo mosquito species belonging to the Aedes genus, Ae. aegypti and Ae. albopictus, have experienced in the last few decades a steep increase in population density and geographical range, in relation with the growth of urbanization and international trade. At the same time, we have observed a resurgence of diseases transmitted by these vectors, with in particular the recent emergence of chikungunya since 2005 and Zika since 2007. Known diseases such as dengue or yellow fever have also caused unusual epidemics in Africa and South America. In this context, a first objective of this work was to show that different diseases presenting a number of similarities (transmission by the same vectors, circulation in the same populations of the same territories), were associated with similar epidemic dynamics. We jointly analysed eighteen successive outbreaks of Zika and chikungunya in nine islands of French Polynesia and the French Antilles, disentangling the respective effects of the virus, territory and weather conditions. We showed that Zika and chikungunya have similar transmissibility levels when circulating in the same territory (transmission ratio 1.04 [95% credibility interval: 0.97-1.13]) but that reporting rates were lower for Zika (odds-ratio 0.37 [95\% CI: 0.34-0.40]). Heavy precipitation was associated with a decrease in transmission two weeks later, then a renewed increase after a delay of four to six weeks. After taking these factors into account, heterogeneity persisted between the different islands, highlighting the importance of specific characteristics of the affected populations and territories. By quantifying the relationships between different diseases, these results suggest that it is possible to forecast the evolution of an epidemic in a given territory by using information from other epidemics transmitted by the same vector in the past. In a second work, we tested this hypothesis, applying it retrospectively to the emergence of Zika in three islands of the French West Indies. The results indicate that, during a Zika outbreak, the use of historical data on previous chikungunya outbreaks in the same territories significantly improves the reliability of forecasts made at an early stage. This approach, based on hierarchical epidemic models and the use of informative prior distributions, could in some situations improve the preparedness of health systems facing a new emergence
Zhu, Shousheng. "Modeling, identifiability analysis and parameter estimation of a spatial-transmission model of chikungunya in a spatially continuous domain". Thesis, Compiègne, 2017. http://www.theses.fr/2017COMP2341/document.
Texto completo da fonteIn different fields of research, modeling has become an effective tool for studying and predicting the possible evolution of a system, particularly in epidemiology. Due to the globalization and the genetic mutation of certain diseases or transmission vectors, several epidemics have appeared in regions not yet concerned in the last years. In this thesis, a model describing the transmission of the chikungunya epidemic to the human population is studied. As a novelty, this model incorporates the spatial mobility of humans. Indeed, it is an interesting factor that has influenced the re-emergence of several epidemic diseases. The displacement of mosquitoes is omitted since it is limited to a few meters. The complete model (ODEs-PDEs model) is then composed of a reaction-diffusion system (taken the form of semi-linear parabolic partial differential equations (PDEs)) coupled with ordinary differential equations (ODEs). We prove the existence, uniqueness, positivity and boundedness of a global solution of this model at first and then give some numerical simulations. In such a model, some parameters are not directly accessible from experiments and have to be estimated numerically. However, before searching for their values, it is essential to verify the identifiability of parameters in order to assess whether the set of unknown parameters can be uniquely determined from the data. This study will insure that numerical procedures can be successful. If the identifiability is not ensured, some supplementary data have to be added. In fact, a first identifiability study had been done for the ODEs model by considering that the number of eggs can be easily counted. However, after discussing with epidemiologist searchers, it appears that it is the number of larvae which can be estimated weeks by weeks. Thus, we will do an identifiability study for the novel ODEs-PDEs model with this assumption. Thanks to an integration of one of the model equations, some easier equations linking the inputs, outputs and parameters are obtained which really simplify the study of identifiability. From the identifiability study, a method and numerical procedure are proposed for estimating the parameters without any knowledge of them
Pagès, Frédéric. "Approche entomologique des risques vectoriels pour les forces armées françaises outre mer". Aix-Marseille 2, 2009. http://www.theses.fr/2009AIX20679.
Texto completo da fonteWang, Lanjiao. "Résistance aux insecticides : importance dans la transmission du virus chikungunya par les moustiques Aedes aegypti Cost of insecticide resistance for mosquito life-history traits and vector capacity Chikungunya virus dissemination in associated with deltamethrin resistance in Aedes aegypti laboratory lines Multiple-resistance and cross-resistance in deltamethrin-selected Aedes-Aegypti Insofemale-line Successes and failures of sixty years of vector control in French Guiana : what is the next step ?" Thesis, Guyane, 2018. http://www.theses.fr/2018YANE0007.
Texto completo da fonteThe mosquito Aedes aegypti is well known as the main vector of Chikungunya, in absence of effective vaccinations and available treatments, mosquito control strategy remains the principal prevention and defense measures for disease control. Nevertheless, the problem of resistance to insecticides is worsening especially because of more and more frequent chemical fights against intense arbovirus outbreaks in the world. We are interested in understanding the effects of resistance in the context of transmission of the disease, and struggle to establish the reasonable compromise between the effectiveness of the vector control strategy and the increase in resistance.From the mosquito population of Ile Royale which was considered as the least resistant population in French Guiana, 4 mosquito lines IR03, IR05, IR13 and IR36 with different resistance profiles to the deltamethrin insecticide have been isolated successfully, biologic and molecular tests were carried out to characterize the resistance mechanisms between them in regarding with their phenotypes and genotypes. The results indicated that IR03 presented only a metabolic resistance, that IR05 harboured both kdr and metabolic resistance, and that IR13/36 showed a moderate metabolic resistance.More than 600 females were orally infected with Chikungunya virus using an artificial engorged system. For each individual, 3 sets of samples (midgut, head and saliva) are collected independently to quantify the presence of virus, in order to define its vector competence by three parameters: the infection rate, the dissemination rate and the transmission rate. The results show that there were significant differences in vector competence, more specifically between the dissemination rate from the midgut to the head over time, which is lower in the more resistant line.Then, expression level of certain genes (CYP 6BB2, CYP 6N12, GST2, Trypsin) which were associated with deltamethrin resistance were measured on the midgut at 7 days after infectious blood meal. Combined with the information of the kdr genotype, we propose that different mechanisms of resistance can influence not only the barrier of the midgut, but also affect the entire spread pathway of the virus to develop in the mosquito body from the midgut to the saliva.Finally, regarding the cost of resistance, the isofemale lines manifested more clearly in terms of population reproduction than immature development including larval development time, larval and nymphal mortality, and the sex ratio post-emergence.Overall, although this research requires more functional validations or supporting experimentations, the data obtained could provide a better understanding of the interactions between insecticide resistance and vector capacity in mosquitoes Aedes aegypti and supply some useful information to improve the current vector control
Cottis, Solène. "Viral manipulation and vectorial specificity mediated by interaction with the G3BP protein, Rasputin in Anopheles mosquitoes". Electronic Thesis or Diss., Sorbonne université, 2022. http://www.theses.fr/2022SORUS437.
Texto completo da fonteAedes aegypti mosquitoes are vectors of many arboviruses including chikungunya virus (CHIKV), Dengue virus, yellow fever virus, and Zika virus. In contrast Anopheles gambiae transmit the parasite Plasmodium, causative agent of malaria. The response of Anopheles mosquitoes to pathogens has been studied mainly for Plasmodium due to the clinical importance of malaria. The only known arbovirus for which Anopheles is the primary vector is o’nyong-nyong virus (ONNV). It is not understood why Anopheles apparently do not display more vectorial potential for arboviruses, particularly because the presence of a virome and transmission of ONNV suggests a potential risk for Anopheles to become a more prominent arbovirus vector in the future. Antiviral response in Anopheles has primarily been studied using ONNV, although only relatively few reports have been published on the subject. The mosquito orthologs of Ras-GAP SH3 domain binding proteins (G3BP), called Rasputin, has been studied in mammals but barely examined in mosquitoes where Rasputin was shown to act as a proviral factor in Aedes, but the proviral molecular mechanism is not understood yet. The first objective of this thesis is to assess the role of Rasputin during ONNV infection in Anopheles mosquitoes and to determine the mechanism mediated by Rasputin. We hypothesis that Rasputin may interact with host antiviral immunity. By using a combination of genomic, cellular, and biochemical methods, I provide evidence that Rasputin is proviral because of the viral manipulation of Rasputin to modulate antiviral immune signaling pathways. These results indicate, for the first time, that Rasputin is required for viral hijacking as a physical target of the viral non-structural protein 3 (nsP3) of ONNV. The second part of my thesis project focused on vectorial specificity in mosquitoes by using the comparison of two closely related alphaviruses, ONNV and CHIKV, as an experimental model. ONNV and CHIKV display many similarities in their biology and pathology, with the major difference being their use of vector species (Anopheles and Aedes, respectively). Previous evidence suggested that nsP3 could be a determinant of vectorial specificity between those two viruses, and here we hypothesize that the role of the interaction between Rasputin and nsP3 of the two different viruses and mosquitoes has a role in vector specificity. By using genomic and cellular methods, I highlighted that Rasputin also acts as a proviral factor for CHIKV in an Anopheles cellular model. Moreover, we found that the match between Anopheles or Aedes Rasputin and the nsP3 of each virus is an important determinant of the cell-specific viral infection. Thus, the interaction between Rasputin and nsP3 of CHIKV and ONNV at least in part influences vectorial specificity for these alphaviruses. Finally, I studied the role of a new host factor involved in ONNV infection of Anopheles encoded by the gene AGAP000570. I characterized the proviral role of this extracellular factor during ONNV infection through a possible paracrine-like mechanism. I also assess the relationship between this secreted factor and Rasputin during viral infection and revealed that those two proteins could act in the same functional pathway. These results generate novel biological insight for the proviral function of Rasputin in manipulating antiviral immune pathways in mosquitoes that could be extended to the role of G3BP in mammals
Livros sobre o assunto "Virus chikungunya – Transmission"
Drake, John M., Michael Bonsall e Michael Strand, eds. Population Biology of Vector-Borne Diseases. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198853244.001.0001.
Texto completo da fonteCapítulos de livros sobre o assunto "Virus chikungunya – Transmission"
Lim, Chang-Kweng. "Virus Isolation and Preparation of Sucrose-Banded Chikungunya Virus Samples for Transmission Electron Microscopy". In Methods in Molecular Biology, 153–62. New York, NY: Springer New York, 2016. http://dx.doi.org/10.1007/978-1-4939-3618-2_14.
Texto completo da fonteLyaruu, Lucille. "Chikungunya Virus Transmission". In Chikungunya Virus - A Growing Global Public Health Threat. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.100199.
Texto completo da fonteHiggs, Stephen, e Dana L. Vanlandingham. "Chikungunya Virus and Zika Virus Transmission Cycles". In Chikungunya and Zika Viruses, 15–68. Elsevier, 2018. http://dx.doi.org/10.1016/b978-0-12-811865-8.00002-7.
Texto completo da fonteCarrillo-Hernández, Marlen Yelitza, Julian Ruiz-Saenz e Marlen Martínez-Gutiérrez. "Coinfection of Zika with Dengue and Chikungunya virus". In Zika Virus Biology, Transmission, and Pathology, 117–27. Elsevier, 2021. http://dx.doi.org/10.1016/b978-0-12-820268-5.00011-0.
Texto completo da fonteReitmayer, Christine M., Michelle V. Evans, Kerri L. Miazgowicz, Philip M. Newberry, Nicole Solano, Blanka Tesla e Courtney C. Murdock. "Mosquito—Virus Interactions". In Population Biology of Vector-Borne Diseases, 191–214. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198853244.003.0011.
Texto completo da fonteBaskoro Tunggul Satoto, Tri, e Nur Alvira Pascawati. "Epidemiology of Chikungunya in Indonesia". In Chikungunya Virus - A Growing Global Public Health Threat. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.98330.
Texto completo da fonteTrabalhos de conferências sobre o assunto "Virus chikungunya – Transmission"
Smartt, Chelsea. "Characterization of differentAedes aegyptipopulations in Florida for interfering with chikungunya virus transmission". In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.114610.
Texto completo da fonteAlto, Barry W. "Risk of transmission of emergent lineages of chikungunya virus by Florida mosquito vectors". In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.109173.
Texto completo da fonteCastro, Ana Flávia Silva, Natália Barros Salgado Vieira e Sarah Joanny da Silva Pereira. "Correlation between Zika virus and microcephaly as a consequence of congenital infection". In XIII Congresso Paulista de Neurologia. Zeppelini Editorial e Comunicação, 2021. http://dx.doi.org/10.5327/1516-3180.629.
Texto completo da fonte