ArticleJournal of veterinary science2024
Field and laboratory investigation of highly pathogenic avian influenza H5N6 and H5N8 in Quang Ninh province, Vietnam, 2020 to 2021.
Article in Journal of veterinary science, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed, 4 citations in OpenAlex.
- Knowledge, attitudes, and practices toward avian influenza among free-grazing duck farmers in Central Thailand: An analytical cross-sectional study.Veterinary world · 2026Article
- A one health approach to prioritizing emerging zoonotic diseases (EZDs) in northern Vietnam.One health (Amsterdam, Netherlands) · 2025Article
- Protection of Ducks Against Highly Pathogenic H5Nx Avian Influenza Viruses by HA Cleavage Site Peptide Vaccine.Current microbiology · 2025Article
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Authors and funding
12 authors at 3 institutions in 2 countries.
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Abstract
backgroundAvian influenza (AI) is a contagious disease that causes illness and death in poultry and humans. High pathogenicity AI (HPAI) H5N6 outbreaks commonly occur in Quang Ninh province bordering China. In June 2021, the first HPAI H5N8 outbreak occurred at a Quang Ninh chicken farm.
objectivesThis study examined the risk factors associated with HPAI H5N6 and H5N8 outbreaks in Quang Ninh.
methodsA retrospective case-control study was conducted in Quang Ninh from Nov 2021 to Jan 2022. The cases were households with susceptible poultry with two or more clinical signs and tested positive by real-time reverse transcription polymerase chain reaction. The controls were households in the same village as the cases but did not show clinical symptoms of the disease. Logistic regression models were constructed to assess the risk factors associated with HPAI outbreaks at the household level.
resultsThere were 38 cases with H5N6 clade 2.3.4.4h viruses (n = 35) and H5N8 clade 2.3.4.4b viruses (n = 3). Compared to the 112 controls, raising poultry in uncovered or partially covered ponds (odds ratio [OR], 7.52; 95% confidence interval [CI], 1.44-39.27), poultry traders visiting the farm (OR, 8.66; 95% CI, 2.7-27.69), farms with 50-2,000 birds (OR, 3.00; 95% CI, 1.06-8-51), and farms with ≥ 2,000 birds (OR, 11.35; 95% CI, 3.07-41.94) were significantly associated with HPAI outbreaks.
conclusionsCombining biosecurity measures, such as restricting visitor entry and vaccination in farms with more than 50 birds, can enhance the control and prevention of HPAI in Quang Ninh and its spread across borders.
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