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Статті в журналах з теми "Newcastle disease virus genotype VII"

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Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 28 січня 2023

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1

Khader, Manar, Magdy El-Kady, and Iman Shaheed. "Viral distribution of Newcastle disease virus genotype VII in different organs of broiler chickens." Brazilian Journal of Veterinary Pathology 13, no. 2 (July 30, 2020): 510–18. http://dx.doi.org/10.24070/bjvp.1983-0246.v13i2p510-518.

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2

Sultan, Hesham A., Wael K. Elfeil, Ahmed A. Nour, Laila Tantawy, Elsayed G. Kamel, Emad M. Eed, Ahmad El Askary, and Shaimaa Talaat. "Efficacy of the Newcastle Disease Virus Genotype VII.1.1-Matched Vaccines in Commercial Broilers." Vaccines 10, no. 1 (December 27, 2021): 29. http://dx.doi.org/10.3390/vaccines10010029.

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Анотація:

Class II genotype VII Newcastle disease viruses (NDV) are predominant in the Middle East and Asia despite intensive vaccination programs using conventional live and inactivated NDV vaccines. In this study, the protective efficacies of three commercial vaccine regimes involving genotype II NDV, recombinant genotype VII NDV-matched, and an autogenous velogenic NDV genotype VII vaccine were evaluated against challenge with velogenic NDV genotype VII (accession number MG029120). Three vaccination regimes were applied as follows: group-1 received inactivated genotype II, group-2 received inactivated recombinant genotype VII NDV-matched, and group-3 received velogenic inactivated autogenous NDV genotype VII vaccines given on day 7; for the live vaccine doses, each group received the same live genotype II vaccine. The birds in all of the groups were challenged with NDV genotype VII, which was applied on day 28. Protection by the three regimes was evaluated after infection based on mortality rate, clinical signs, gross lesions, virus shedding, seroconversion, and microscopic changes. The results showed that these three vaccination regimes partially protected commercial broilers (73%, 86%, 97%, respectively, vs. 8.6% in non-vaccinated challenged and 0% in non-vaccinated non-challenged birds) against mortality at 10 days post-challenge (dpc). Using inactivated vaccines significantly reduced the virus shedding at the level of the number of shedders and the amount of virus that was shed in all vaccinated groups (G1-3) compared to in the non-vaccinated group (G-4). In conclusion, using closely genotype-matched vaccines (NDV-GVII) provided higher protection than using vaccines that were not closely genotype-matched and non-genotype-matched. The vaccine seeds that were closely related to genotype VII.1.1 provided higher protection against challenge against this genotype since it circulates in the Middle East region. Updating vaccine seeds with recent and closely related isolates provides higher protection.

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3

Cao, Yongzhong, Zongyi Bo, Baoyang Ruan, Mengjiao Guo, Chengcheng Zhang, Xiaorong Zhang, and Yantao Wu. "Construction of Novel Thermostable Chimeric Vaccine Candidates for Genotype VII Newcastle Disease Virus." Viruses 15, no. 1 (December 28, 2022): 82. http://dx.doi.org/10.3390/v15010082.

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Анотація:

Genotype VII Newcastle Disease Virus (NDV) has caused a pandemic in many countries and usually causes fatal consequences in infected chickens. Although current commercial attenuated NDV vaccines can provide an ideal protection against genotype VII NDV, they cannot completely prevent the infection and viral shedding, and the genotype of some vaccine strains cannot match with the prevalent strain. In this study, in order to construct a thermostable and genotype VII-matched live attenuated vaccine, we used a thermostable genotype VIII virulent HR09 strain as the backbone and replaced its F gene with that of the genotype VII DT-2014 strain. Meanwhile, the cleavage site of F gene of DT-2014 was mutated to that of class I F protein and avirulent class II F protein, respectively. The results showed that the two chimeric viruses, designated rcHR09-CI and rcHR09-CII, shared a similar growth kinetics and thermostability with their parental HR09 strain. Mean death time (MDT) and intracerebral pathogenicity index (ICPI) tests showed that the two chimeric viruses were highly attenuated. Though both chimeric NDVs and La Sota vaccine strain could provide complete protection to immunized chickens against the challenge of virulent genotype VII ZJ1 strain, the two chimeric NDVs could induce a higher level of antibody response against ZJ1 strain and could significantly reduce the viral shedding compared with La Sota vaccine strain. In conclusion, our study constructed two chimeric thermostable genotype VII-matched NDV vaccine candidates, which provided complete protection against the challenge of virulent genotype VII NDV.

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4

Sedeik, M. E., A. R. Elbestawy, N. A. El-shall, M. E. Abd El-Hack, I. M. Saadeldin, and A. A. Swelum. "Comparative efficacy of commercial inactivated Newcastle disease virus vaccines against Newcastle disease virus genotype VII in broiler chickens." Poultry Science 98, no. 5 (May 2019): 2000–2007. http://dx.doi.org/10.3382/ps/pey559.

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5

Wasfy, Momtaz O. "Comparative efficacy of commercial inactivated Newcastle disease virus vaccines against Newcastle disease virus genotype VII in broiler chickens." Poultry Science 98, no. 10 (October 2019): 4515. http://dx.doi.org/10.3382/ps/pez238.

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6

Xiang, Bin, Libin Chen, Juncheng Cai, Jianpeng Liang, Qiuyan Lin, Chenggang Xu, Chan Ding, Ming Liao, and Tao Ren. "Insights into Genomic Epidemiology, Evolution, and Transmission Dynamics of Genotype VII of Class II Newcastle Disease Virus in China." Pathogens 9, no. 10 (October 13, 2020): 837. http://dx.doi.org/10.3390/pathogens9100837.

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Анотація:

Newcastle disease virus (NDV) is distributed worldwide and has caused significant losses to the poultry industry. Almost all virulent NDV strains belong to class II, among which genotype VII is the predominant genotype in China. However, the molecular evolution and phylodynamics of class II genotype VII NDV strains in China remained largely unknown. In this study, we identified 13 virulent NDV including 11 genotype VII strains and 2 genotype IX strains, from clinical samples during 1997 to 2019. Combined NDV sequences submitted to GenBank, we investigate evolution, and transmission dynamics of class II NDVs in China, especially genotype VII strains. Our results revealed that East and South China have the most genotypic diversity of class II NDV, and East China might be the origin of genotype VII NDVs in China. In addition, genotype VII NDVs in China are presumably transmitted by chickens, as the virus was most prevalent in chickens. Furthermore, codon usage analysis revealed that the F genes of genotype VII NDVs have stronger adaptation in chickens, and six amino acids in this gene are found under positive selection via selection model analysis. Collectively, our results revealed the genetic diversity and evolutionary dynamics of genotype VII NDVs in China, providing important insights into the epidemiology of these viruses in China.

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7

Putri, Dwi, Okti Poetri, Agung Candra, and Retno Soejoedono. "Production of hyperimmune serum against genotype VII Newcastle disease virus in rabbits with several applications." Journal of Advanced Veterinary and Animal Research 9, no. 2 (2022): 211. http://dx.doi.org/10.5455/javar.2022.i586.

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Objective: This study aimed to produce hyperimmune serum against genotype VII Newcastle disease virus (NDV) with several applications. Materials and Methods: Production of hyperimmune serum against genotype VII NDV was performed on eight New Zealand white rabbits divided into four groups. Rabbits were immunized three times on the 1st day, the 14th day, and the 30th day. Blood sampling was carried out on the 8th day after the third immunization. Results: All groups showed the same pattern of hemagglutination inhibition (HI) titer results. HI titers would peak on the 5th or the 9th day after the second immunization, then decrease until the 3rd day after the third immunization, and increase again on the 5th day after the third immu¬nization. Rabbits immunized intravenously showed higher HI titers than the other groups. These results indicate that the intravenous route for hyperimmune serum production against genotype VII Newcastle disease virus greatly affects the immune response result. Conclusions: The production of hyperimmune serum by intravenous immunization three times was able to produce the highest titer of 210 at 38 days. The agar gel precipitation test and the Western blot assay showed that the hyperimmune serum was specific for the Newcastle disease antigen.

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8

Qin, Zhuoming, Lei Sun, Baochen Ma, Zhizhong Cui, Yiping Zhu, Yoshihiro Kitamura, and Wenjun Liu. "F gene recombination between genotype II and VII Newcastle disease virus." Virus Research 131, no. 2 (February 2008): 299–303. http://dx.doi.org/10.1016/j.virusres.2007.10.001.

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9

Sun, Yuzhang, Mingjun Sun, Yonglian Dai, Renfu Yin, and Zhuang Ding. "An improved reverse genetics system for Newcastle disease virus genotype VII." Virologica Sinica 31, no. 6 (December 2016): 521–24. http://dx.doi.org/10.1007/s12250-016-3869-3.

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10

Eid, Amal A. M., Ashraf Hussein, Ola Hassanin, Reham M. Elbakrey, Rebecca Daines, Jean-Remy Sadeyen, Hanan M. F. Abdien, Klaudia Chrzastek, and Munir Iqbal. "Newcastle Disease Genotype VII Prevalence in Poultry and Wild Birds in Egypt." Viruses 14, no. 10 (October 13, 2022): 2244. http://dx.doi.org/10.3390/v14102244.

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Newcastle Disease Virus (NDV) genotype VII is a highly pathogenic Orthoavulavirus that has caused multiple outbreaks among poultry in Egypt since 2011. This study aimed to observe the prevalence and genetic diversity of NDV prevailing in domestic and wild birds in Egyptian governorates. A total of 37 oropharyngeal swabs from wild birds and 101 swabs from domestic bird flocks including chickens, ducks, turkeys, and pelicans, were collected from different geographic regions within 13 governorates during 2019–2020. Virus isolation and propagation via embryonated eggs revealed 91 swab samples produced allantoic fluid containing haemagglutination activity, suggestive of virus presence. The use of RT-PCR targeted to the F gene successfully detected NDV in 85 samples. The geographical prevalence of NDV was isolated in 12 governorates in domestic birds, migratory, and non-migratory wild birds. Following whole genome sequencing, we assembled six NDV genome sequences (70–99% of genome coverage), including five full F gene sequences. All NDV strains carried high virulence, with phylogenetic analysis revealing that the strains belonged to class II within genotype VII.1.1. The genetically similar yet geographically distinct virulent NDV isolates in poultry and a wild bird may allude to an external role contributing to the dissemination of NDV in poultry populations across Egypt. One such contribution may be the migratory behaviour of wild birds; however further investigation must be implemented to support the findings of this study. Additionally, continued genomic surveillance in both wild birds and poultry would be necessary for monitoring NDV dissemination and genetic diversification across Egypt, with the aim of controlling the disease and protecting poultry production.

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11

da Silva, Ana P., Emily J. Aston, Gaspar H. Chiwanga, Ashley Birakos, Amandus P. Muhairwa, Boniface B. Kayang, Terra Kelly, Huaijun Zhou, and Rodrigo A. Gallardo. "Molecular Characterization of Newcastle Disease Viruses Isolated from Chickens in Tanzania and Ghana." Viruses 12, no. 9 (August 20, 2020): 916. http://dx.doi.org/10.3390/v12090916.

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Newcastle disease (ND) is one of the most challenging infectious diseases affecting poultry production in Africa, causing major economic losses. To date, Newcastle disease virus isolates from several African countries have been grouped into class II NDV genotypes I, IV, V, VI, VII, XI, XIII, XIV, XVII, XVIII and XXI. Although ND is endemic in many African countries, information on circulating genotypes is still scarce. In Tanzania, outbreaks with genotypes V and XIII have been reported. In West and Central Africa, genotypes XIV, XVII, and XVIII are the most predominant. To investigate other genotypes circulating in Tanzania and Ghana, we performed molecular genotyping on isolates from Tanzania and Ghana using the MinION, a third-generation portable sequencing device from Oxford Nanopore Technologies. Using the MinION, we successfully sequenced the NDV F gene hypervariable region of 24 isolates from Tanzania and four samples from Ghana. In Tanzania, genotypes V, VII and XIII were detected. All isolates from Ghana belonged to genotype XVIII. The data obtained in this study reflect the genetic diversity of NDV in Africa and highlight the importance of surveillance for monitoring the distribution of NDV genotypes and viral evolution.

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12

Bello, Muhammad Bashir, Siti Nor Azizah Mahamud, Khatijah Yusoff, Aini Ideris, Mohd Hair-Bejo, Ben P. H. Peeters, and Abdul Rahman Omar. "Development of an Effective and Stable Genotype-Matched Live Attenuated Newcastle Disease Virus Vaccine Based on a Novel Naturally Recombinant Malaysian Isolate Using Reverse Genetics." Vaccines 8, no. 2 (June 2, 2020): 270. http://dx.doi.org/10.3390/vaccines8020270.

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Анотація:

Genotype VII Newcastle disease viruses are associated with huge economic losses in the global poultry industry. Despite the intensive applications of vaccines, disease outbreaks caused by those viruses continue to occur frequently even among the vaccinated poultry farms. An important factor in the suboptimal protective efficacy of the current vaccines is the genetic mismatch between the prevalent strains and the vaccine strains. Therefore, in the present study, an effective and stable genotype-matched live attenuated Newcastle disease virus (NDV) vaccine was developed using reverse genetics, based on a recently isolated virulent naturally recombinant NDV IBS025/13 Malaysian strain. First of all, the sequence encoding the fusion protein (F) cleavage site of the virus was modified in silico from virulent polybasic (RRQKRF) to avirulent monobasic (GRQGRL) motif. The entire modified sequence was then chemically synthesized and inserted into pOLTV5 transcription vector for virus rescue. A recombinant virus termed mIBS025 was successfully recovered and shown to be highly attenuated based on OIE recommended pathogenicity assessment indices. Furthermore, the virus was shown to remain stably attenuated and retain the avirulent monobasic F cleavage site after 15 consecutive passages in specific-pathogen-free embryonated eggs and 12 passages in one-day-old chicks. More so, the recombinant virus induced a significantly higher hemagglutination inhibition antibody titre than LaSota although both vaccines fully protected chicken against genotype VII NDV induced mortality and morbidity. Finally, mIBS025 was shown to significantly reduce both the duration and quantity of cloacal and oropharyngeal shedding of the challenged genotype VII virus compared to the LaSota vaccine. These findings collectively indicate that mIBS025 provides a better protective efficacy than LaSota and therefore can be used as a promising vaccine candidate against genotype VII NDV strains.

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13

Xue, Cong, Yanlong Cong, Renfu Yin, Yixue Sun, Chan Ding, Shengqing Yu, Xiufan Liu, et al. "Genetic diversity of the genotype VII Newcastle disease virus: identification of a novel VIIj sub-genotype." Virus Genes 53, no. 1 (December 2, 2016): 63–70. http://dx.doi.org/10.1007/s11262-016-1404-0.

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14

MASE, Masaji. "Hemagglutinin-neuraminidase gene of genotype VII Newcastle disease virus strains isolated in Japan." Journal of Veterinary Medical Science 84, no. 1 (2022): 1–5. http://dx.doi.org/10.1292/jvms.21-0490.

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15

Ewies, Samar S., Ahmed Ali, Sabry M. Tamam, and Hanafy M. Madbouly. "Molecular characterization of Newcastle disease virus (genotype VII) from broiler chickens in Egypt." Beni-Suef University Journal of Basic and Applied Sciences 6, no. 3 (September 2017): 232–37. http://dx.doi.org/10.1016/j.bjbas.2017.04.004.

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16

Qiao, Qilong, Mingzhen Song, Congcong Song, Yihang Zhang, Xiangdong Wang, Qing Huang, Baiyu Wang, et al. "Single-Dose Vaccination of Recombinant Chimeric Newcastle Disease Virus (NDV) LaSota Vaccine Strain Expressing Infectious Bursal Disease Virus (IBDV) VP2 Gene Provides Full Protection against Genotype VII NDV and IBDV Challenge." Vaccines 9, no. 12 (December 15, 2021): 1483. http://dx.doi.org/10.3390/vaccines9121483.

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Newcastle disease virus (NDV) and infectious bursal disease virus (IBDV) are the two most important and widespread viruses causing huge economic losses in the global poultry industry. Outbreaks of genotype VII NDV and IBDV variants in vaccinated poultry flocks call for genetically matched vaccines. In the present study, a genetic matched chimeric NDV LaSota vaccine strain expressing VP2 gene of IBDV variant, rLaS-VIIF/HN-VP2 was generated for the first time, in which both the F and HN genes of LaSota were replaced with those of the genotype VII NDV strain FJSW. The cleavage site of the FJSW strain F protein in the rLaS-VIIF/HN-VP2 genome was mutated to the avirulent motif found in LaSota. Expression of IBDV VP2 protein was confirmed by western blot. The rLaS-VIIF/HN-VP2 maintained the efficient replication ability in embryonated eggs, low pathogenicity and genetic stability comparable to that of parental LaSota virus. One dose oculonasal vaccination of one-week-old SPF chickens with rLaS-VIIF/HN-VP2 induced full protection against genotype VII NDV and IBDV lethal challenge. These results indicate that the rLaS-VIIF/HN-VP2 is a promising bivalent vaccine to prevent infections of IBDV and genotype VII NDV.

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17

Ahmed, Hasnaa, Mohamed Khodier, Samy Kasem, and Abd El-Galil El-Gohary. "PROTECTIVE EFFICACY OF COMMERCIAL NEW CASTLE DISEASE VACCINES AGAINST VIRULENT GENOTYPE VII NEWCASTLE DISEASE VIRUS." Kafrelsheikh Veterinary Medical Journal 15, no. 1 (August 1, 2017): 89–103. http://dx.doi.org/10.21608/kvmj.2017.112753.

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18

Sallam, Hamdi, Mostafa Saleh, and Ali Zanaty. "Phylogenetic Analysis of Virulent Newcastle Disease Virus Recently Isolated from Broiler Farms." Alexandria Journal of Veterinary Sciences 75, no. 2 (2022): 37. http://dx.doi.org/10.5455/ajvs.127863.

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Newcastle disease (ND) is a highly contagious viral disease that causing high economic losses among poultry farms. The disease is caused by Newcastle disease virus (NDV) that frequently reported in Egypt although of intensive vaccination. Continuous genetic characterization of the virus along with detection of genetic variations in relation to the vaccine strains, are important for proper disease control. Clinical samples were collected from broiler farms in six Egyptian governorates during 2020−2022. NDV was isolated on embryonated chicken egg and identified by real time reverse transcriptase-PCR. Nineteen NDV isolates namely (HS1NDV−HS19NDV) were identified by RT-PCR and deposited on GeneBank database under the accession nos. (OP588159−OP588177). All the isolates found to be velogenic according to the amino acid sequences of the cleavage sits (GRRQKRF). In addition these strains were assigned under genotype VII and sub-genotype VII.1.1. In relation to vaccine strains, comparison of amino acids deduced from partially sequenced fusion gene revealed amino acid substitutions in fusion peptides that are essential in initiation of viral fusion with the host cell membrane. Moreover, HS3NDV had one amino acid substitution that was found in HR1 which shares in formation of the conserved six-helix bundles, that their assembly is tightly joined to the membrane fusion.

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19

Snoeck, Chantal J., Adeniyi T. Adeyanju, Ademola A. Owoade, Emmanuel Couacy-Hymann, Bello R. Alkali, Ulf Ottosson, and Claude P. Muller. "Genetic Diversity of Newcastle Disease Virus in Wild Birds and Pigeons in West Africa." Applied and Environmental Microbiology 79, no. 24 (October 11, 2013): 7867–74. http://dx.doi.org/10.1128/aem.02716-13.

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ABSTRACTIn West and Central Africa, virulent Newcastle disease virus (NDV) strains of the recently identified genotypes XIV, XVII, and XVIII are enzootic in poultry, representing a considerable threat to the sector. The increasing number of reports of virulent strains in wild birds at least in other parts of the world raised the question of a potential role of wild birds in the spread of virulent NDV in sub-Saharan Africa as well. We investigated 1,723 asymptomatic birds sampled at live-bird markets and sites important for wild-bird conservation in Nigeria and 19 sick or dead wild birds in Côte d'Ivoire for NDV class I and II. Typical avirulent wild-type genotype I strains were found in wild waterfowl in wetlands in northeastern Nigeria. They were unrelated to vaccine strains, and the involvement of inter- or intracontinental migratory birds in their circulation in the region is suggested. Phylogenetic analyses also revealed that genotype VI strains found in pigeons, including some putative new subgenotype VIh and VIi strains, were introduced on multiple separate occasions in Nigeria. A single virulent genotype XVIII strain was found in a dead wild bird in Côte d'Ivoire, probably as a result of spillover from sick poultry. In conclusion, screening of wild birds and pigeons for NDV revealed the presence a variety of virulent and avirulent strains in West Africa but did not provide strong evidence that wild birds play an important role in the spread of virulent strains in the region.

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20

Cheng, Y., D. Sheng, X. Li, S. Hong, and L. Guo. "Efficacy of a Recombinant Genotype VII Vaccine against Challenge with Velogenic Newcastle Disease Virus." Journal of Vaccines and Immunology 2, no. 1 (October 25, 2016): 019–22. http://dx.doi.org/10.17352/jvi.000016.

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21

Hu, Shunlin, Huailiang Ma, Yantao Wu, Wenbo Liu, Xiaoquan Wang, Yuliang Liu, and Xiufan Liu. "A vaccine candidate of attenuated genotype VII Newcastle disease virus generated by reverse genetics." Vaccine 27, no. 6 (February 2009): 904–10. http://dx.doi.org/10.1016/j.vaccine.2008.11.091.

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22

Sultan, Hesham A., Shaimaa Talaat, Wael K. Elfeil, Karim Selim, Mohamed A. Kutkat, Sameh A. Amer, and Kang-Seuk Choi. "Protective efficacy of the Newcastle disease virus genotype VII–matched vaccine in commercial layers." Poultry Science 99, no. 3 (March 2020): 1275–86. http://dx.doi.org/10.1016/j.psj.2019.10.063.

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23

Wei, Xiao, Yuhao Shao, Zongxi Han, Junfeng Sun, and Shengwang Liu. "Glycoprotein-C-gene-deleted recombinant infectious laryngotracheitis virus expressing a genotype VII Newcastle disease virus fusion protein protects against virulent infectious laryngotracheitis virus and Newcastle disease virus." Veterinary Microbiology 250 (November 2020): 108835. http://dx.doi.org/10.1016/j.vetmic.2020.108835.

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24

Palya, Vilmos, Tímea Tatár-Kis, Abdel Satar A. Arafa, Balázs Felföldi, Tamás Mató, and Ahmed Setta. "Efficacy of a Turkey Herpesvirus Vectored Newcastle Disease Vaccine against Genotype VII.1.1 Virus: Challenge Route Affects Shedding Pattern." Vaccines 9, no. 1 (January 11, 2021): 37. http://dx.doi.org/10.3390/vaccines9010037.

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Анотація:

The control of Newcastle disease (ND) highly relies on vaccination. Immunity provided by a ND vaccine can be characterized by measuring the level of clinical protection and reduction in challenge virus shedding. The extent of shedding depends a lot on the characteristics of vaccine used and the quality of vaccination, but influenced also by the genotype of the challenge virus. We demonstrated that vaccination of SPF chicks with recombinant herpesvirus of turkey expressing the F-gene of genotype I ND virus (rHVT-ND) provided complete clinical protection against heterologous genotype VII.1.1 ND virus strain and reduced challenge virus shedding significantly. 100% of clinical protection was achieved already by 3 weeks of age, irrespective of the challenge route (intra-muscular or intra-nasal) and vaccination blocked cloacal shedding almost completely. Interestingly, oro-nasal shedding was different in the two challenge routes: less efficiently controlled following intra-nasal than intra-muscular challenge. Differences in the shedding pattern between the two challenge routes indicate that rHVT-ND vaccine induces strong systemic immunity, that is capable to control challenge virus dissemination in the body (no cloacal shedding), even when it is a heterologous strain, but less efficiently, although highly significantly (p < 0.001) suppresses the local replication of the challenge virus in the upper respiratory mucosa and consequent oro-nasal shedding.

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25

Meng, Lingzhai, Shan Zhang, Xiaoran Guo, Rana Waseem Akhtar, Syed Aftab Hussain, Kuan Zhao, and Wanzhe Yuan. "Complete genome and molecular characterization of genotype VII velogenic Newcastle disease virus isolated in China." Acta virologica 65, no. 02 (2021): 149–59. http://dx.doi.org/10.4149/av_2021_210.

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26

Esmaelizad, Majid, Vafa Mayahi, Maryam Pashaei, and Hossein Goudarzi. "Identification of novel Newcastle disease virus sub-genotype VII-(j) based on the fusion protein." Archives of Virology 162, no. 4 (December 21, 2016): 971–78. http://dx.doi.org/10.1007/s00705-016-3189-9.

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27

Ragab, Elham, Ibrahim Moharam, Rania El-Naggar, Eid Hussien, Zakaria El-Kanawati, and Mohammed AboElkhair. "Isolation and Molecular Characterization of Newcastle Disease Virus Genotype VII Circulating in Egypt (2017-2020)." Journal of Current Veterinary Research 4, no. 2 (October 1, 2022): 45–55. http://dx.doi.org/10.21608/jcvr.2022.267507.

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28

S., Syamsiah Aini. "Identification of Newcastle Disease Virus sub-genotype VII 1.1 isolated from chickens in Sabah, Malaysia." Tropical Biomedicine 39, no. 4 (December 31, 2022): 579–86. http://dx.doi.org/10.47665/tb.39.4.015.

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29

Xu, Xiaohong, Zhuang Ding, Qianliang Yuan, Jiaxin Ding, Jindou Li, Weiqi Wang, Yanlong Cong, et al. "A genotype VII Newcastle disease virus-like particles confer full protection with reduced virus load and decreased virus shedding." Vaccine 37, no. 3 (January 2019): 444–51. http://dx.doi.org/10.1016/j.vaccine.2018.11.068.

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30

Said, Ahmed, and Hesham Sultan. "Newcastle Disease Virus Vaccines Based On Genotype VII Strains Provide Efficient Protection Against Challenge With Circulating Very Virulent Field Virus (Genotype VII) In Broiler Chickens." Journal of Current Veterinary Research 1, no. 2 (November 1, 2019): 19–35. http://dx.doi.org/10.21608/jcvr.2019.57003.

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31

Mousa, Mohamed R., Faten F. Mohammed, Ayman H. El-deeb, Hanan Saad Khalefa, and Kawkab A. Ahmed. "Molecular and pathological characterisation of genotype VII Newcastle disease virus on Egyptian chicken farms during 2016–2018." Acta Veterinaria Hungarica 68, no. 2 (October 13, 2020): 221–30. http://dx.doi.org/10.1556/004.2020.00027.

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AbstractNewcastle disease virus (NDV) remains a constant threat to the poultry industry even with intensive vaccination programmes. In the present study, 40 samples were collected from farms showing high mortalities in some Egyptian governorates between 2016 and 2018. Tracheal samples were collected for virus isolation and confirmed by real-time RT-PCR. Molecular characterisation was performed by sequencing, followed by phylogenetic analysis of the novel sequences. Histopathological and immunohistochemical examinations were performed on different organs from NDV-infected broilers. The phylogenetic analysis revealed that the NDV isolates from different areas of Egypt were genetically closely related and all belonged to genotype VII. The histopathological hallmarks included haemorrhagic tracheitis, interstitial pneumonia with syncytia formation, haemorrhagic proventriculitis, necrotising pancreatitis, pan-lymphoid depletion, non-suppurative encephalitis and nephritis. Immunological detection of NDV antigen clarified the widespread presence of viral antigen in different organs with severe lesions. The present study confirmed that a virulent NDV of genotype VII became the predominant strain, causing severe outbreaks in poultry farms in Egypt. The presence of viral antigen in different organs indicates the pantropic nature of the virus. Immunohistochemistry was a very useful diagnostic tool for the detection of NDV antigen.

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32

Xu, Xiaohong, Cong Xue, Xinxin Liu, Junjiao Li, Yidong Fei, Zhe Liu, Jiaqi Mu, et al. "A novel recombinant attenuated Newcastle disease virus expressing H9 subtype hemagglutinin protected chickens from challenge by genotype VII virulent Newcastle disease virus and H9N2 avian influenza virus." Veterinary Microbiology 228 (January 2019): 173–80. http://dx.doi.org/10.1016/j.vetmic.2018.11.006.

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33

Rohaim, Mohammed A., Mohammad Q. Al-Natour, Rania F. El Naggar, Mohammed A. Abdelsabour, Yahia M. Madbouly, Kawkab A. Ahmed, and Muhammad Munir. "Evolutionary Trajectories of Avian Avulaviruses and Vaccines Compatibilities in Poultry." Vaccines 10, no. 11 (November 3, 2022): 1862. http://dx.doi.org/10.3390/vaccines10111862.

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Newcastle disease virus (NDV) causes one of the highly infectious avian diseases in poultry leading to genuine financial misfortunes around the world. Recently, there has been an increasing trend in the number of ND-associated outbreaks in commercial Jordanian poultry flocks indicating a possible complex evolutionary dynamic of NDV infections in the country. To underpin the dynamics of circulating NDV strains and to assess the vaccine-escape potential, a total of 130 samples were collected from different poultry flocks in six Jordanian Governorates during 2019–2021. Twenty positive isolates, based on real-time reverse transcriptase PCR, were used for further genetic characterization and evolutionary analysis. Our results showed that there is a high evolutionary distance between the newly identified NDV strains (genotype VII.1.1) in this study and the commercially used vaccines (genotypes I and II), suggesting that circulating NDV field strains are under constant evolutionary pressure. These mutations may significantly affect flocks that have received vaccinations as well as flocks with insufficient immunity in terms of viral immunity and disease dynamics. To assess this further, we investigated the efficacy of the heterologous inactivated LaSota or homologous genotype VII.1.1 vaccine for their protection against virulent NDV in chicken. Vaccine-induced immunity was evaluated based on the serology, and protection efficacy was assessed based on clinical signs, survival rates, histopathology, and viral shedding. Chickens vaccinated with the inactivated genotype VII.1.1 based vaccine showed 100% protection with a significant reduction in virus shedding, and ameliorated histopathology lesions compared to LaSota vaccinated chicks that showed 60% protection. These results revealed that the usage of NDV inactivated vaccine from the circulating field strains can successfully ameliorate the clinical outcome and virus pathobiology in vaccinated chicks and will serve as an effective vaccine against the threat posed by commonly circulating NDV strains in the poultry industry.

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Wang, Zhannan, Xiaohan Zhao, Ying Wang, Chao Sun, Ming Sun, Xingyun Gao, Futing Jia, et al. "In Vivo Production of HN Protein Increases the Protection Rates of a Minicircle DNA Vaccine against Genotype VII Newcastle Disease Virus." Vaccines 9, no. 7 (July 2, 2021): 723. http://dx.doi.org/10.3390/vaccines9070723.

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The Cre-recombinase mediated in vivo minicircle DNA vaccine platform (CRIM) provided a novel option to replace a traditional DNA vaccine. To further improve the immune response of our CRIM vaccine, we designed a dual promoter expression plasmid named pYL87 which could synthesize short HN protein under a prokaryotic in vivo promoter PpagC and full length HN protein of genotype VII Newcastle disease virus (NDV) under the previous eukaryotic CMV promoter at the same time. Making use of the self-lysed Salmonella strain as a delivery vesicle, chickens immunized with the pYL87 construction showed an increased serum haemagglutination inhibition antibody response, as well as an increased cell proliferation level and cellular IL-4 and IL-18 cytokines, compared with the previous CRIM vector pYL47. After the virus challenge, the pYL87 vector could provide 80% protection compared to 50% protection against genotype VII NDV in pYL47 immunized chickens, indicating a promising dual promoter strategy used in vaccine design.

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35

Umali, Dennis V., Hiroshi Ito, Kazutoshi Shirota, Hiromitsu Katoh, and Toshihiro Ito. "Characterization of complete genome sequence of genotype VI and VII velogenic Newcastle disease virus from Japan." Virus Genes 49, no. 1 (May 1, 2014): 89–99. http://dx.doi.org/10.1007/s11262-014-1075-7.

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36

Abd Elfatah, Khaled Saad, Moshira Abas Elabasy, Faris El-khyate, Ehab Kotb Elmahallawy, Samah M. Mosad, Fatma A. El-Gohary, Walied Abdo, et al. "Molecular Characterization of Velogenic Newcastle Disease Virus (Sub-Genotype VII.1.1) from Wild Birds, with Assessment of Its Pathogenicity in Susceptible Chickens." Animals 11, no. 2 (February 15, 2021): 505. http://dx.doi.org/10.3390/ani11020505.

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Newcastle disease (ND) is considered to be one of the most economically significant avian viral diseases. It has a worldwide distribution and a continuous diversity of genotypes. Despite its limited zoonotic potential, Newcastle disease virus (NDV) outbreaks in Egypt occur frequently and result in serious economic losses in the poultry industry. In this study, we investigated and characterized NDV in wild cattle egrets and house sparrows. Fifty cattle egrets and fifty house sparrows were collected from the vicinity of chicken farms in Kafrelsheikh Governorate, Egypt, which has a history of NDV infection. Lung, spleen, and brain tissue samples were pooled from each bird and screened for NDV by real-time reverse transcriptase polymerase chain reaction (RRT-PCR) and reverse transcriptase polymerase chain reaction (RT-PCR) to amplify the 370 bp NDV F gene fragment. NDV was detected by RRT-PCR in 22 of 50 (44%) cattle egrets and 13 of 50 (26%) house sparrows, while the conventional RT-PCR detected NDV in 18 of 50 (36%) cattle egrets and 10 of 50 (20%) of house sparrows. Phylogenic analysis revealed that the NDV strains identified in the present study are closely related to other Egyptian class II, sub-genotype VII.1.1 NDV strains from GenBank, having 99.7–98.5% identity. The pathogenicity of the wild-bird-origin NDV sub-genotype VII.1.1 NDV strains were assessed by experimental inoculation of identified strains (KFS-Motobas-2, KFS-Elhamoul-1, and KFS-Elhamoul-3) in 28-day-old specific-pathogen-free (SPF) Cobb chickens. The clinical signs and post-mortem changes of velogenic NDV genotype VII (GVII) were observed in inoculated chickens 3 to 7 days post-inoculation, with 67.5–70% mortality rates. NDV was detected in all NDV-inoculated chickens by RRT-PCR and RT-PCR at 3, 7, and 10 days post-inoculation. The histopathological findings of the experimentally infected chickens showed marked pulmonary congestion and pneumonia associated with complete bronchial stenosis. The spleen showed histocytic cell proliferation with marked lymphoid depletion, while the brain had malacia and diffuse gliosis. These findings provide interesting data about the characterization of NDV in wild birds from Egypt and add to our understanding of their possible role in the transmission dynamics of the disease in Egypt. Further research is needed to explore the role of other species of wild birds in the epidemiology of this disease and to compare the strains circulating in wild birds with those found in poultry.

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37

Sameh Abdel-Moez, Amer, Ali Mohamed Ahmed, Ahmed Mohamed Kandeil, and Mohamed Abdel-Aziz Kutkat. "Advancement in Vaccination of Broiler Chickens with Genotype-Matched Vaccines to Currently Epidemic Newcastle Disease Virus Genotype VII in Egypt." Journal of World's Poultry Research 9, no. 3 (September 25, 2019): 117–23. http://dx.doi.org/10.36380/jwpr.2019.14.

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38

Dewidar, Abdelmonem A. A., Walid H. Kilany, Azza A. El-Sawah, Salama A. S. Shany, Al-Hussien M. Dahshan, Islam Hisham, Magdy F. Elkady, and Ahmed Ali. "Genotype VII.1.1-Based Newcastle Disease Virus Vaccines Afford Better Protection against Field Isolates in Commercial Broiler Chickens." Animals 12, no. 13 (June 30, 2022): 1696. http://dx.doi.org/10.3390/ani12131696.

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This study evaluated the efficacy of live and inactivated conventional GII LaSota and recombinant GVII Newcastle disease vaccines in commercial broilers. The experimental groups (G2–G7) were vaccinated on day 7 and day 21 of age with live vaccines from the same vaccine type “GII LaSota, GVII vaccine (A), GVII vaccine (B)” via eye drop; however, G3, G5, and G7 received a single dose from inactivated counterpart vaccines subcutaneously on day 7 of age. Vaccine efficacy was evaluated based on elicited humoral immunity, clinical protection, and reduction in virus shedding after challenge with virulent GVII 1.1. strain. Results demonstrated that live and inactivated recombinant GVII vaccine based on VG/GA strain backbone elicited superior protection parameters (100% protection). Although the conventional GII LaSota live and inactivated vaccination regime protected 93.3% of vaccinated birds, the virus shedding continued until 10 DPC. The post-vaccination serological monitoring was consistent with protection results. The study concludes that conventional GII ND vaccines alone are probably insufficient due to the current epidemiology of the GVII 1.1 NDV strains. Our findings further support that protection induced by recombinant GVII 1.1. ND vaccines are superior. Interestingly, the efficacy of recombinant ND vaccines seemed to be influenced by the backbone virus since the VG/GA backbone-based vaccine provided better protection and reduced virus shedding.

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39

Nooruzzaman, Mohammed, Ismail Hossain, Jahan Ara Begum, Moktader Moula, Shamsul Arefin Khaled, Rokshana Parvin, Emdadul Haque Chowdhury, Mohammad Rafiqul Islam, Diego G. Diel, and Kiril M. Dimitrov. "The First Report of a Virulent Newcastle Disease Virus of Genotype VII.2 Causing Outbreaks in Chickens in Bangladesh." Viruses 14, no. 12 (November 25, 2022): 2627. http://dx.doi.org/10.3390/v14122627.

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Newcastle disease (ND) is endemic in poultry in Bangladesh. We performed genotypic and pathotypic characterization of four ND virus (NDV) isolates from recent outbreaks in broiler chickens in Bangladesh during the period of 2020–2021. Phylogenetic analysis based on the complete fusion protein gene coding sequences classified the viruses into NDV class II genotype VII.2 together with viruses from Indonesia isolated between 2014 and 2021 and a single 2020 Indian isolate. Pathogenicity testing using the intracerebral pathogenicity index in day-old chickens and mean embryo death time in embryonating chicken eggs revealed that the Bangladeshi isolates are velogenic. Inoculation of 35-day-old chickens with two NDV isolates (LT67 and N5) resulted in 100% morbidity by 3 days post inoculation (DPI), and all birds succumbed to infection by 7 DPI. Massive hemorrhages, congestion and necrotic lesions were observed in different visceral organs, which were typical for infection with a velogenic viscerotropic pathotype of NDV. At microscopic examination, tracheitis, severe pneumonia, focal proventriculitis, transmural enteritis, focal myocarditis, severe congestion and necrosis in kidneys, and lymphoid depletion in lymphoid tissues were found. Our study reports the first outbreak of the panzootic genotype VII.2 NDV in poultry in Bangladesh and documents a possible recent re-introduction of this NDV genotype from Southeast or East Asia. This study further provides viral distribution and epidemiological data that can facilitate the effective control of NDV.

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40

Frolov, S. V., N. V. Moroz, I. A. Chvala, and V. N. Irza. "Effectiveness of vaccines produced by the Federal State-Financed Institution “ARRIAH” against topical genotype VII Newcastle disease viruses." Veterinary Science Today 1, no. 1 (March 29, 2021): 44–51. http://dx.doi.org/10.29326/2304-196x-2021-1-36-44-51.

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In 2019, the situation regarding Newcastle disease in the Russian Federation worsened radically due to the spread of NDV subgenotype VII-L throughout the country from the Primorsky Krai to the Kursk Oblast. As a result, 17 infected settlements with backyard farms where unvaccinated poultry was kept were registered. In this study, immunogenicity of the vaccines produced by the FGBI “ARRIAH”, as well as the effectiveness of various vaccination schedules to prevent genotype VII NDVs, relevant for the Russian Federation, was studied. It is known that the currently circulating ND agent is significantly more virulent compared to the viruses isolated in previous years, and it is able to bypass the immunity provided by live vaccines. Test results demonstrated that the vaccines against genotype VII NDVs produced by the FGBI “ARRIAH” are highly immunogenic, which allows to effectively prevent the disease when using them as part of a standard vaccination schedule. A 2-dose vaccination schedule using live vaccine from the La Sota strain as well as the “complete” vaccination schedule using inactivated vaccines provides immunity in 100% of chicks. The use of live vaccines in a single- and double-dose vaccination schedules prevents mortality and clinical disease in poultry, but does not prevent virus replication, while the addition of an inactivated vaccine to the immunization schedule does prevent the replication of the virulent virus. Thus, the use of domestically produced live and inactivated vaccines, primarily the ones containing the La Sota strain, with the following control of the immunity level and booster vaccination, if required, is the main tool for the disease control.

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41

Habaka, Manal, Mona Aly, Mohamed Lebdah, and Kamel Abo-Elazm. "Newcastle disease virus Genotype VII in Chicken Flocks in Dakahlia Governorate and the Effectiveness of some Vaccines." Zagazig Veterinary Journal 48, no. 4 (December 1, 2020): 448–56. http://dx.doi.org/10.21608/zvjz.2020.49280.1123.

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42

Ahmed, Hager, Mohamed Amer, khaled El-bayoumi, sameh Amer, and moh Kutkat. "Identification and sequencing of Genotype VII of Newcastle disease virus from chicken flocks in six Egyptian Governorates." Egyptian Journal of Veterinary Sciences 48, no. 1 (June 30, 2017): 31–41. http://dx.doi.org/10.21608/ejvs.2017.1236.1015.

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43

Hu, Zenglei, Shunlin Hu, Chun Meng, Xiaoquan Wang, Jie Zhu, and Xiufan Liu. "Generation of a Genotype VII Newcastle Disease Virus Vaccine Candidate with High Yield in Embryonated Chicken Eggs." Avian Diseases 55, no. 3 (September 2011): 391–97. http://dx.doi.org/10.1637/9633-122410-reg.1.

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44

Hu, Zenglei, Shunlin Hu, Chun Meng, Xiaoquan Wang, Jie Zhu, and Xiufan Liu. "Generation of a Genotype VII Newcastle Disease Virus Vaccine Candidate with High Yield in Embryonated Chicken Eggs." Avian Diseases Digest 6, no. 3 (September 2011): e7-e8. http://dx.doi.org/10.1637/9798-963311-digest.1.

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45

Amer, Sameh, Asmaa Maatouq, Hager Ahmed, and Eman Hassan. "Evaluation for Efficacy of Commercially Available Vaccines Against Challenge with Newcastle Disease Virus Genotype VII in Broilers." Egyptian Journal of Veterinary Sciences 51, no. 1 (June 1, 2020): 35–41. http://dx.doi.org/10.21608/ejvs.2019.14003.1088.

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46

Mazlan, Lizma Felisha, Noor Farhana Bachek, Siti Nor Azizah Mahamud, Lokman Hakim Idris, Tan Sheau Wei, Abdul Rahman Omar, and Mohd Hezmee Mohd Noor. "The positive expression of genotype VII Newcastle disease virus (Malaysian isolate) in Japanese quails (Coturnix coturnix japonica)." Veterinary World 10, no. 5 (May 2017): 542–48. http://dx.doi.org/10.14202/vetworld.2017.542-548.

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47

Perozo, F., R. Marcano, and C. L. Afonso. "Biological and Phylogenetic Characterization of a Genotype VII Newcastle Disease Virus from Venezuela: Efficacy of Field Vaccination." Journal of Clinical Microbiology 50, no. 4 (January 11, 2012): 1204–8. http://dx.doi.org/10.1128/jcm.06506-11.

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48

Li, Jihong, Chunchun Meng, Tingting Ren, Wei Wang, Yaodan Zhang, Weifeng Yuan, Shuqin Xu, et al. "Production, characterization, and epitope mapping of a monoclonal antibody against genotype VII Newcastle disease virus V protein." Journal of Virological Methods 260 (October 2018): 88–97. http://dx.doi.org/10.1016/j.jviromet.2018.07.009.

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49

Manoharan, Vinoth K., Berin P. Varghese, Anandan Paldurai, and Siba K. Samal. "Effect of fusion protein cleavage site sequence on generation of a genotype VII Newcastle disease virus vaccine." PLOS ONE 13, no. 5 (May 14, 2018): e0197253. http://dx.doi.org/10.1371/journal.pone.0197253.

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50

Wang, Jianzhong, Chunfeng Wang, Na Feng, Hualei Wang, Xuexing Zheng, Songtao Yang, Yuwei Gao, et al. "Development of a reverse genetics system based on RNA polymerase II for Newcastle disease virus genotype VII." Virus Genes 50, no. 1 (November 11, 2014): 152–55. http://dx.doi.org/10.1007/s11262-014-1137-x.

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