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Objective: To investigate serologically the presence of avian influenza virus (AIV) in backyard chickens from Mandlhakazi district, Southern Mozambique. Methods: A total of 439 sera samples from unvaccinated and apparently healthy backyard chickens from 4 villages (Chidenguele, Macuacua, Chizavane, and Nwadja-hane) were tested for the presence of AIV antibodies through commercial enzyme-linked immunoabsorbent assay (ELISA) kit used according to manufacturer instructions. Results: Anti-AIV antibodies were detected in all villages surveyed. The overall sero-prevalence obtained was 32.6％ (95％ CI 28.2％–37.0％). The highest prevalence of 51.3％ (95％ CI 42.3％–60.2％) was recorded in Macuacua village, while the lowest prevalence of 13.0％(95％CI 6.2％–19.9％) was found in Chizavane village. The results of logistic regression analyses suggested that chicken being located in Chizavane and Macuacua villages were more unlikely for getting the virus exposure (P<0.05). Conclusions: Our findings suggested that AIV is widespread within backyard chickens in the studied villages. Further research is needed to identify the circulating virus ge-notypes and determine the potential role of backyard chickens in the zoonotic trans-mission of AIV in Mozambique.
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Objective To investigate serologically the presence of avian influenza virus (AIV) in backyard chickens from Mandlhakazi district, Southern Mozambique. Methods A total of 439 sera samples from unvaccinated and apparently healthy backyard chickens from 4 villages (Chidenguele, Macuacua, Chizavane, and Nwadjahane) were tested for the presence of AIV antibodies through commercial enzyme-linked immunoabsorbent assay (ELISA) kit used according to manufacturer instructions. Results Anti-AIV antibodies were detected in all villages surveyed. The overall seroprevalence obtained was 32.6% (95% CI 28.2%–37.0%). The highest prevalence of 51.3% (95% CI 42.3%–60.2%) was recorded in Macuacua village, while the lowest prevalence of 13.0% (95% CI 6.2%–19.9%) was found in Chizavane village. The results of logistic regression analyses suggested that chicken being located in Chizavane and Macuacua villages were more unlikely for getting the virus exposure (P < 0.05). Conclusions Our findings suggested that AIV is widespread within backyard chickens in the studied villages. Further research is needed to identify the circulating virus genotypes and determine the potential role of backyard chickens in the zoonotic transmission of AIV in Mozambique.
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<p><b>OBJECTIVE</b>To test the antibodies against newcastle disease virus (NDV) and avian influenza virus (AIV, H9N2) in the unvaccinated backyard poultry in Bushehr province, Iran from 2012 to 2013.</p><p><b>METHODS</b>A total of 1 530 blood samples from unvaccinated backyard chickens in Bushehr province, south of Iran, were tested for antibodies against NDV and AIV (H9N2) by hemagglutination inhibition test according to International Epizootic Office (OIE) recommendation.</p><p><b>RESULTS</b>Of these, 614 (40.13%) and 595 (39.00%) were positive for NDV and AIV (H9N2) respectively.</p><p><b>CONCLUSIONS</b>The findings of the present study indicated that NDV and AIV (H9N2) were endemic and widely distributed in backyard areas of Bushehr province which should be incorporated in the control strategies. Further studies are needed to identify the circulating virus genotypes, model their transmission risk, provide adapted control measures and design proper and applicable vaccination program.</p>
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Objective: To test the antibodies against newcastle disease virus (NDV) and avian influenza virus (AIV, H9N2) in the unvaccinated backyard poultry in Bushehr province, Iran from 2012 to 2013. Methods: A total of 1 530 blood samples from unvaccinated backyard chickens in Bushehr province, south of Iran, were tested for antibodies against NDV and AIV (H9N2) by hemagglutination inhibition test according to International Epizootic Office (OIE) recommendation.Results:Conclusions: The findings of the present study indicated that NDV and AIV (H9N2) were endemic and widely distributed in backyard areas of Bushehr province which should be incorporated in the control strategies. Further studies are needed to identify the circulating virus genotypes, model their transmission risk, provide adapted control measures and design proper and applicable vaccination program. Of these, 614 (40.13%) and 595 (39.00%) were positive for NDV and AIV (H9N2) respectively.