Avian influenza virus surveillance in wild bird in South Korea from 2019 to 2022

Eun-Jee Na; Su-Beom Chae; Jun-Soo Park; Yoon-Ji Kim; Young-Sik Kim; Jae-Ku Oem

doi:10.7853/kjvs.2022.45.4.285

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자료유형: 학술저널

저자정보: Eun-Jee Na (Laboratory of Veterinary Infectious Disease College of Veterinary of Medicine Jeonbuk National Univ) Su-Beom Chae (Laboratory of Veterinary Infectious Disease College of Veterinary of Medicine Jeonbuk National Univ) Jun-Soo Park (Laboratory of Veterinary Infectious Disease College of Veterinary of Medicine Jeonbuk National Univ) Yoon-Ji Kim (Laboratory of Veterinary Infectious Disease College of Veterinary of Medicine Jeonbuk National Univ) Young-Sik Kim (Laboratory of Veterinary Infectious Disease College of Veterinary of Medicine Jeonbuk National Univ) Jae-Ku Oem (Laboratory of Veterinary Infectious Disease College of Veterinary of Medicine Jeonbuk National Univ)

저널정보: 한국동물위생학회(구 한국가축위생학회) 한국가축위생학회지 한국가축위생학회지 제45권 제4호

발행연도: 2022.12

수록면: 285 - 292 (8page)

DOI: 10.7853/kjvs.2022.45.4.285

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Avian influenza viruses (AIVs) cause contagious diseases and have the potential to infect not only birds but also mammals. Wild birds are the natural reservoir of AIVs and spread them worldwide while migrating. Here we collected active AIV surveillance data from wild bird habitats during the 2019 to 2022 winter seasons (from September to March of the following year) in South Korea. We isolated 97 AIVs from a total of 7,590 fecal samples and found the yearly prevalence of AIVs was 0.83, 1.48, and 1.27, respectively. The prevalence of AIVs were generally higher from September to No-vember. These findings demonstrate that a high number of wild birds that carry AIVs migrate into South Korea during the autumn season. The highest virus numbers were isolated from the species Anas platyrhynchos (72%; n=70), followed by Anas poecilorhyncha (15.4%; n=15), suggesting that each is an important host for these pathogens. Twenty-five hemagglutinin-neuraminidase subtypes were isolated, and all AIVs except the H5N8 subtype were found to be low-pathogenic avian influ-enza viruses (LPAIVs). Active surveillance of AIVs in wild birds could benefit public health because it could help to estimate their risk for introduction into animals and humans. Moreover, considering that 132 cases of human AIV infections have been reported worldwide within the last 5 years, active surveillance of AIVs is necessary to avoid outbreaks.

#Avian influenza viruses #Wild birds #Surveillance

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