2013－2019年广西边境地区低致病性禽流感病毒监测分析

doi:10.16431/j.cnki.1671-7236.2021.08.033

Abstract

Abstract: In order to understand the low pathogenic Avian influenza virus (LPAIV) epidemic situation in Guangxi border areas from 2013 to 2019, 33 964 poultry swabs samples were collected from large-scale farms and live poultry markets for LPAIV subtype isolation and identification through hemagglutination inhibition test and RT-PCR.The results showed that 3 892 LPAIV strains were isolated, the virus isolation rates from 2013 to 2019 were 17.39%, 11.23%, 13.59%, 9.31%, 9.09%, 9.12% and 15.21%, and the total isolation rate was 11.46%, of which the rate in 2013 was the highest.The isolated LPAIV included 7 subtypes H1, H3, H4, H6, H9, H10 and H11.These virus isolation rates were 0.14%, 4.37%, 0.19%, 4.06%, 2.69%, 0.01% and 0.003%.In the live poultry market, LPAIV subtype H1, H3, H4, H6, H9, H10 and H11 rates were 0.19%, 5.53%, 0.21%, 5.29%, 3.41%, 0.01% and 0.004%, respectively.While in the farms LPAIV subtype H3, H4, H6 and H9 rates were 1.26%, 0.12%, 0.79% and 0.78%, respectively.The virus isolation rate of the farm samples (2.95%) was obviously lower than the live poultry market samples (14.64%).The virus isolation rates of waterfowl (15.10%) and environmental samples (21.67%) were much higher than that from chickens (5.77%).The results showed that the current poultry carried multiple LPAIV subtypes, and waterfowl were high-risk flocks.The live poultry market was seriously polluted, and the market supervision (LPAIV) should be further strengthened, established and implemented more scientific, effective live poultry market operation mechanism.

Key words: low pathogenic avian influenza virus (LPAIV); epidemiology; border areas of Guangxi

CLC Number:

S852.65⁺7

YIN Yanwen, SHI Kaichuang, SUN Wenchao, XIE Shouyu, QU Sujie, LU Wenjun, WANG Luxia, QIN Yong, PEI Xingbiao, LING Dan. Surveillance Analysis of Low Pathogenic Avian Influenza Virus in Border Areas of Guangxi from 2013 to 2019[J]. China Animal Husbandry and Veterinary Medicine, 2021, 48(8): 3002-3009.

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Surveillance Analysis of Low Pathogenic Avian Influenza Virus in Border Areas of Guangxi from 2013 to 2019

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