Surveillance on the avian influenza virus in live poultry markets in Nanchang city from 2014 to 2017
10.3760/cma.j.cn112866-20191210-00198
- VernacularTitle:南昌市2014—2017年活禽市场禽流感病毒监测
- Author:
Daobin FENG
1
;
Wentao SONG
;
Xiansheng NI
;
Jingwen WU
;
Yanqing WANG
;
Sheng'en CHEN
;
Haiying CHEN
;
Mingbin LIU
Author Information
1. 南昌大学公共卫生学院 江西省预防医学重点实验室 330006；复旦大学附属公共卫生临床中心，上海 201508
- Keywords:
Poultry;
Environment;
Avian influenza virus;
Nucleic acid;
Subtype
- From:
Chinese Journal of Experimental and Clinical Virology
2020;34(3):264-269
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate epidemic status of avian influenza virus (AIV) in live poultry market (LPM) and evaluate its potential public health threat and develop control measures in Nanchang city.Methods:Forty-seven LPM in 10 counties/districts of Nanchang city were selected as surveillance sites by using cluster random sampling. Poultry swabs and environmental samples were obtained from LPM. Real time RT-PCR was used for AIV typing and subtyping. Excel 2016, SPSS 24.0 and Prism Version 7 (GraphPad) software were used for statistical analysis.Results:Total of 9 248 poultry swabs and environmental samples were collected. 1 525 specimens(16.49%) were positive for AIV. H7 and H9 were the dominant subtypes, and H9 positive rate was highest (17.44%). Sewage (21.46%) and throat swabs (20.46%) had higher positive rates than the other types of samples. Chicken and duck were dominant hosts for AIV, the corresponding positive rates were 22.80% and 13.95%. The positive rates of Honggutan district, Anyi county and Xinjian district were 25.52%, 24.31% and 22.35%, which were higher than that of the other counties/districts. Each county/district had its unique subtype composition of AIV.Conclusions:The coexistence of H7, H9 and other subtypes of AIV in LMP was identified in Nanchang city. Continuing active surveillance and comprehensive control measures should be taken to reduce the potential risk of human infection.
