中国动物检疫2025，Vol.42Issue(2)：19-23,5.DOI:10.3969/j.issn.1005-944X.2025.02.004
2023年成都市禽流感流行率横断面调查
A Cross-sectional Investigation on Avian Influenza Prevalence in Chengdu City in 2023
摘要
Abstract
In order to investigate the infection status of avian influenza virus(AIV)in Chengdu City,prevalence was estimated and sampling amount was calculated by a formula of disease detection through the strategies of two-stage sampling and simple random sampling in 2023,2 020 samples were collected from 45 premises such as intensive poultry farms,live poultry wholesale markets,farmers'markets and wild bird habitats to detect AIV and its subtypes of H5,H7 and H9.The results showed that AIV subtype H9 other than subtypes H5 and H7 was detected from intensive poultry farms,live poultry wholesale markets and farmers'markets;the population apparent prevalence rates of subtype H9 were 10.0%and 35.0%respectively on intensive poultry farms and booths in wholesale markets,and the true prevalence rates were 7.6%(95%CI:0-17.2%)and 34.5%(95%CI:13.4%-55.6%),respectively,with a higher prevalence in trading as compared to farming;positive premises were spatially distributed with a certain aggregation,tending to be the more concentrated the closer to urban areas;positive rate of environmental samples from slaughtering slabs in live poultry wholesale markets was higher than that from live poultry booths,and that of H9 subtype virus was higher in cages,vehicles,sewage outlets and freezers and cutting boards in farmers'markets.In conclusion,highly pathogenic avian influenza(HPAI)was better prevented and controlled in Chengdu,but the detection rate of subtype H9 AIV was relatively high in trading link and central urban areas.It was recommended to continue to implement compulsory vaccination of AI in farming,to improve management for poultry slaughtering,and to strengthen cleaning and disinfection in markets,especially in central urban areas,striving for a good effect of decontamination.关键词
禽流感/流行率/规模禽场/活禽批发市场/农贸市场Key words
avian influenza/prevalence rate/intensive poultry farm/live poultry wholesale market/farmers'market分类
畜牧业引用本文复制引用
姚玲,陈斌,周立新,岳建国,李敏,张毅,梁璐琪,周潇潇,阳爱国..2023年成都市禽流感流行率横断面调查[J].中国动物检疫,2025,42(2):19-23,5.基金项目
国家成都农业科技中心地方财政专项(NASC2023ST11) （NASC2023ST11）
四川省科技计划项目(2022ZDZX0017) （2022ZDZX0017）
