Enhanced environmental surveillance for avian influenza A/H5, H7 and H9 viruses in Guangxi, China, 2017-2019.

Autor:	Chen T; Chinese National Influenza Center, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China., Tan Y; Guangxi Autonomous Regional Center for Disease Control and Prevention, Nanning 530028, China., Song Y; Centers for Disease Control and Prevention, Atlanta 30329, USA., Wei G; Chongzuo City Center for Disease Control and Prevention, Chongzuo 532299, China., Li Z; Pingxiang Center for Disease Control and Prevention, Pingxiang 532699, China., Wang X; Longzhou Center for Disease Control and Prevention, Chongzuo 532499, China., Yang J; Chinese National Influenza Center, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China., Millman AJ; Centers for Disease Control and Prevention, Atlanta 30329, USA., Chen M; Guangxi Autonomous Regional Center for Disease Control and Prevention, Nanning 530028, China., Liu D; Chongzuo City Center for Disease Control and Prevention, Chongzuo 532299, China., Huang T; Chongzuo City Center for Disease Control and Prevention, Chongzuo 532299, China., Jiao M; Chinese National Influenza Center, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China., He W; Guangxi Autonomous Regional Center for Disease Control and Prevention, Nanning 530028, China., Zhao X; Chongzuo City Center for Disease Control and Prevention, Chongzuo 532299, China., Greene CM; Centers for Disease Control and Prevention, Atlanta 30329, USA., Kile JC; Centers for Disease Control and Prevention, Atlanta 30329, USA., Zhou S; Centers for Disease Control and Prevention, Atlanta 30329, USA., Zhang R; Centers for Disease Control and Prevention, Atlanta 30329, USA., Zeng X; Chinese National Influenza Center, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China., Guo Q; Chinese National Influenza Center, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China., Wang D; Chinese National Influenza Center, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China.
Jazyk:	angličtina
Zdroj:	Biosafety and health [Biosaf Health] 2023; Vol. 5 (1), pp. 30-36.
DOI:	10.1016/j.bsheal.2022.12.006
Abstrakt:	We conducted environmental surveillance to detect avian influenza viruses circulating at live poultry markets (LPMs) and poultry farms in Guangxi Autonomous Region, China, where near the China-Vietnam border. From November through April 2017-2018 and 2018-2019, we collected environmental samples from 14 LPMs, 4 poultry farms, and 5 households with backyard poultry in two counties of Guangxi and tested for avian influenza A, H5, H7, and H9 by real-time reverse transcription-polymerase chain reaction (rRT-PCR). In addition, we conducted four cross-sectional questionnaire surveys among stall owners on biosecurity practices in LPMs of two study sites. Among 16,713 environmental specimens collected and tested, the median weekly positive rate for avian influenza A was 53.6% (range = 33.5% - 66.0%), including 25.2% for H9, 4.9% for H5, and 21.2% for other avian influenza viruses A subtypes, whereas a total of two H7 positive samples were detected. Among the 189 LPM stalls investigated, most stall owners (73.0%) sold chickens and ducks. Therefore, continued surveillance of the avian influenza virus is necessary for detecting and responding to emerging trends in avian influenza virus epidemiology. Competing Interests: Conflict of interest statement The authors declare that there are no conflicts of interest. The findings and conclusions in this report are those of the authors and do not necessarily represent the official position of the Centers for Disease Control and Prevention.
Databáze:	MEDLINE
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