Avian influenza A (H9N2) virus infections among poultry workers, swine workers, and the general population in Beijing, China, 2013-2016: A serological cohort study.

ABSTRACT:

Background

Few studies have reported on the seroprevalence of antibodies against avian influenza A (H9N2) virus and the incidence of these infections in the northern China and among swine workers.

Methods

We conducted a serological cohort study among people working with poultry or swine or the general population in Beijing, China. It comprised four cross-sectional serological surveys in November 2013, April 2014, April 2015, and April 2016. Blood samples collected from the participants were tested for anti-H9N2 antibodies using a hemagglutination-inhibition (HI) assay. Multivariable Poisson regression model was then used to compare the person-month incidence rates for H9N2 viral infections among the three groups, assessed by incidence rate ratio (IRR).

Results

In the

SUBMITTER: Ma C 

PROVIDER: S-EPMC6586185 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature