Cited by 15Influenza Virus Research StudiesVirology and Viral DiseasesViral Infections and Outbreaks Research

The DOI matches its Crossref record; 19 of the 19 references it cites were found in a registry or an index.

Antibodies against H10N8 avian influenza virus among animal workers in Guangdong Province before November 30, 2013, when the first human H10N8 case was recognized

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Abstract

BACKGROUND: Considered an epicenter of pandemic influenza virus generation, southern China has recently seen an increasing number of human H7N9 infections. However, it is not the only threat. On 30 November 2013, a human H10N8 infection case was first described in China. The origin and genetic diversity of this novel virus is similar to that of H7N9 virus. As H10N8 avian influenza virus (AIV) was first identified from a duck in Guangdong Province during 2012 and there is also evidence of H10N8 infected dogs in this region, we sought to examine archived sera from animal workers to see if there was evidence of subclinical human infections before the first human H10N8 cases. METHODS: We studied archived serum samples (cross-sectional study, convenience sample) collected between May and September 2013 from 710 animal workers and 107 non-animal exposed volunteers living in five cities of Guangdong Province. Study participants' sera were tested by horse red blood cells (RBCs) hemagglutination inhibition (HI) and microneutralization (MN) assays according to World Health Organization guidelines. The A/Jiangxi-Donghu/346-1/2013(H10N8) virus was used. Sera which have an HI assay ≥1:20 were further tested with the MN assay. Questionnaire data were examined for risk factor associations with positive serological assays. Risk factor analyses failed to identify specific factors associated with probable H10N8 infections. RESULTS: Among the 827 sera, only 21 animal workers had an HI titer ≥1:20 (18 had an HI titer of 1:20 and 3 had an HI titer of 1:40). None of these 21 subjects reported experiencing any influenza symptoms during the three months before enrollment. Among the three subjects with HI titers of 1:40, two had MN antibody titers of 1:40, and one had a MN antibody titer of 1:80 (probable H10N8 infections). CONCLUSIONS: Study data suggest that animal workers may have been infected with the H10N8 virus before the first recognized H10N8 human infection cases. It seems prudent to continue surveillance for H10N8 viruses among animal workers.

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Authors
Qi, W., Su, S., Xiao, C., Zhou, P., Li, H., Ke, C., Gray, G. C., Zhang, G., & Liao, M.
Affiliations
  • South China Agricultural University (CN)
  • Guangdong Provincial Center for Disease Control and Prevention (CN)
  • Duke University (US)
Corresponding author
  • Zhang, Guihong
  • Liao, Ming
Venue
BMC Medicine
Published
2014-10-27
Volume
12
Issue
1
Pages
205-205
ISSN
1741-7015 (ISSN-L)
OpenAlex
W2027567662
Cited by
15
References
19
Citations by year
2025: 4 · 2023: 1 · 2022: 1 · 2021: 1 · 2020: 3 · 2019: 1 · 2016: 2 · 2015: 2
FWCI
1.01
Type
journal article
Language
en
Open access
Locations
  • BMC Medicine (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • University of Florida Digital Collections (University of Florida) (submittedVersion, other-oa)
  • National University of Singapore (submittedVersion, cc-by)
Funders
  • Chinese Academy of Sciences (CARS-36)
  • Natural Science Foundation of Guangdong Province (CARS-36)
  • University of Hong Kong
  • Modern Agricultural Technology Industry System of Shandong province (CARS-36)
  • Institute of Microbiology, Chinese Academy of Sciences
Topics
  • Health Sciences › Medicine › Epidemiology › Influenza Virus Research Studies
  • Health Sciences › Medicine › Epidemiology › Virology and Viral Diseases
  • Health Sciences › Medicine › Infectious Diseases › Viral Infections and Outbreaks Research
Keywords
seroprevalence, asymptomatic infection, hemagglutination inhibition antibodies, occupational exposure, Guangdong, influenza surveillance, H7N9, zoonotic transmission, infection risk factors
MeSH terms
Agriculture, Animals, Antibodies, Viral, China, Cross-Sectional Studies, Female, Humans, Influenza, Human, Male, Zoonoses, Seroepidemiologic Studies, Veterinarians, Young Adult, Influenza A Virus, H7N9 Subtype, Influenza A Virus, H10N8 Subtype

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