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Serological evidence of avian influenza virus subtype H5 and H9 in live bird market, Myanmar

•A serological survey of influenza in Mingalar Tau Ngyunt Live Bird Market (MLN-LBM) in Yangon, Myanmar showed that 12.88 % (80/621) of poultry had antibodies against AIV by NP-ELISA.•In MLN-LBM, 38.06 % (51/134) of layers, 7.08 % (8/113) of backyard chicken, 2.07 % (5/242) of broilers and 12.12 % (...

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Published in:Comparative immunology, microbiology and infectious diseases microbiology and infectious diseases, 2020-12, Vol.73, p.101562-101562, Article 101562
Main Authors: Lin, Thant Nyi, Bunpapong, Napawan, Boonyapisitsopa, Supanat, Chaiyawong, Supassama, Janetanakit, Taveesak, Rain, Khin Thu, Mon, Pont Pont, Oo, Sandi Myint, Thontiravong, Aunyaratana, Amonsin, Alongkorn
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Language:English
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Summary:•A serological survey of influenza in Mingalar Tau Ngyunt Live Bird Market (MLN-LBM) in Yangon, Myanmar showed that 12.88 % (80/621) of poultry had antibodies against AIV by NP-ELISA.•In MLN-LBM, 38.06 % (51/134) of layers, 7.08 % (8/113) of backyard chicken, 2.07 % (5/242) of broilers and 12.12 % (16/132) of ducks were AIV positive.•HI test for specific antibodies against AIV-H5N1 and AIV-H9N2 were 1.77 % (11/621) and 4.51 % (28/621).•This study revealed the evidence of AIV-H5N1 and AIV-H9N2 exposure in both chicken and ducks in the LBM in Yangon, Myanmar. Avian Influenza (AI), caused by Alphainfluenzaviruses (AIVs), is a contagious respiratory disease in birds and mammals. AIVs have been reported in poultry worldwide and the impact of AIVs on human health is immense. In this study, a serological survey of AIV subtype H5 and H9 was conducted in a live bird market (LBM) in Yangon, Myanmar during February 2016 to September 2016. A total of 621 serum samples were collected from chickens (n = 489) and ducks (n = 132) from 48 vendors in the LBM. The samples were examined for antibodies against influenza viruses by using NP-ELISA and specific antibodies against AIV-H5N1 (Clade 2.3.4) and AIV-H9N2 (Clade 9.4.2) by using Hemagglutination Inhibition (HI) assay. The result of NP-ELISA assay showed that 12.88 % (80/621) of poultry in LBM was positive for AIV antibodies. In detail, 38.06 % (51/134) of layers, 7.08 % (8/113) of backyard chicken, 2.07 % (5/242) of broilers and 12.12 % (16/132) of ducks were AIV positive. The HI test for specific antibodies against AIV-H5N1 and AIV-H9N2 were 1.77 % (11/621) and 4.51 % (28/621), respectively. Our findings revealed the evidence of AIV-H5N1 and AIV-H9N2 exposure in both chicken and ducks in the LBM in Yangon, Myanmar. Risks of influenza infections and transmission among poultry and humans in the LBMs could not be ignored.
ISSN:0147-9571
1878-1667
DOI:10.1016/j.cimid.2020.101562