Background:Recurrent infections of animal hosts with avian influenza viruses(AIVs)have posted a persistent threat.It is very important to understand the avian influenza virus distribution and characteristics in enviro...Background:Recurrent infections of animal hosts with avian influenza viruses(AIVs)have posted a persistent threat.It is very important to understand the avian influenza virus distribution and characteristics in environment associated with poultry and wild bird.The aim of this study was to analyze the geographic and seasonal distributions of AIVs in the 31 provinces,municipalities and autonomous region(PMA)of China,compare the AIVs prevalence in different col-lecting sites and sampling types,analyze the diversity of AIVs subtypes in environment.展开更多
文摘目的了解南昌市活禽市场中禽流感病毒的分布状况,为评估新型禽流感病毒(avian influenza virus,AIV)的潜在公共卫生威胁及其预防控制提供科学依据。方法采用整群随机抽样的方法抽取南昌市10个县/区47家活禽市场作为监测场所。采用Real time RT-PCR对采集的活禽和环境标本进行AIV核酸检测。使用Excel 2016、SPSS 24.0和Prism Version 7(GraphPad)软件进行统计学分析。结果2014—2017年共采集活禽拭子和市场环境标本9248份,AIV核酸阳性标本1525份,总体阳性率为16.49%。H7、H9是活禽市场的主要流行亚型,H9亚型阳性率最高(17.44%)。清洗禽类污水(21.46%)和禽咽拭子(20.46%)的阳性率显著高于其他类型标本。鸡(22.80%)和鸭(13.95%)的阳性率在所有家禽中排前2位。红谷滩新区(25.52%)、安义县(24.31%)、新建区(22.35%)的阳性率高于其他县区,不同县/区AIV亚型构成不同。结论南昌市活禽市场中H7、H9等多种亚型AIV共存循环,应采取持续的主动监测和综合控制措施以降低人群潜在的感染风险。
文摘Background:Recurrent infections of animal hosts with avian influenza viruses(AIVs)have posted a persistent threat.It is very important to understand the avian influenza virus distribution and characteristics in environment associated with poultry and wild bird.The aim of this study was to analyze the geographic and seasonal distributions of AIVs in the 31 provinces,municipalities and autonomous region(PMA)of China,compare the AIVs prevalence in different col-lecting sites and sampling types,analyze the diversity of AIVs subtypes in environment.
