ArticleInfluenza and other respiratory viruses2019
Avian influenza A (H9N2) virus infections among poultry workers, swine workers, and the general population in Beijing, China, 2013-2016: A serological cohort study.
Article in Influenza and other respiratory viruses, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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14 citing papers in PubMed, 16 citations in OpenAlex.
- Surveillance of zoonotic respiratory viral infections in animal farms: a model project with a focus on One Health approach-A study protocol.Frontiers in public health · 2026Article
- Viral factors underlying the pandemic potential of influenza viruses.Microbiology and molecular biology reviews : MMBR · 2025Review
- Occupational Risk from Avian Influenza Viruses at Different Ecological Interfaces Between 1997 and 2019.Microorganisms · 2025Review
- Genetic, biological and epidemiological study on a cluster of H9N2 avian influenza virus infections among chickens, a pet cat, and humans at a backyard farm in Guangxi, China.Emerging microbes & infections · 2023Article
- Seroconversion of a Swine Herd in a Free-Range Rural Multi-Species Farm against HPAI H5N1 2.3.4.4b Clade Virus.Microorganisms · 2023Article
- Reported human infections of H9N2 avian influenza virus in China in 2021.Frontiers in public health · 2023Article
- Serologic Evidence of Occupational Exposure to Avian Influenza Viruses at the Wildfowl/Poultry/Human Interface.Microorganisms · 2021Article
- Antigen-capture ELISA and immunochromatographic test strip to detect the H9N2 subtype avian influenza virus rapidly based on monoclonal antibodies.Virology journal · 2021Article
- Review
- Novel reassortant of H9N2 avian influenza viruses isolated from chickens and quails in Egypt.Veterinary world · 2021Article
- Article
- Novel Avian Influenza A Virus Infections of Humans.Infectious disease clinics of North America · 2019Review
- Avian Influenza A Viruses among Occupationally Exposed Populations, China, 2014-2016.Emerging infectious diseases · 2019Article
- Avian influenza A (H9N2) virus infections among poultry workers, swine workers, and the general population in Beijing, China, 2013-2016: A serological cohort study.Influenza and other respiratory viruses · 2019Article
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13 authors at 2 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundFew 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.
methodsWe 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).
resultsIn the four cross-sectional surveys, the highest seroprevalence of anti-H9N2 antibodies (HI titer ≥ 80) was recorded in the poultry workers (2.77%, 19/685) in April 2016, while the lowest was recorded in the general population (0.09%, 1/1135) in April 2015. The highest incidence density rate for H9N2 infections across the whole study period was recorded among the poultry workers (3.75/1000 person-months), followed by the swine workers (1.94/1000 person-months) and the general population (1.78/1000 person-months). Multivariable analysis showed that the poultry workers were at higher risk (IRR: 2.42, 95% CI: 1.07-5.48; P = 0.034) of contracting H9N2 virus than the general population.
conclusionsAlthough the seroprevalence of H9N2 antibodies was low in Beijing, the poultry workers were at higher risk of contracting H9N2 viral infections than the general population. Closer monitoring and strengthened protection measures for poultry workers are warranted.
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