Transmission of Swine Influenza A Viruses along Pig Value Chains, Cambodia, 2020-2022.

Arata Hidano ORCID logo ; Dina Koeut ; Hannah Holt ; William TM Leung ; Sokhom Krean ; Vutha Chhim ; Bunnary Seng ; Sovanncheypo Chao ; Wong Foong Ying ; Pov Son ; +9 more... Sina Vor ; Sokchea Huy ; Ty Chhay ; Sothyra Tum ; San Sorn ; Monidarin Chou ; Yvonne CF Su ; Gavin JD Smith ; James W Rudge ORCID logo ; (2024) Transmission of Swine Influenza A Viruses along Pig Value Chains, Cambodia, 2020-2022. Emerging infectious diseases, 30 (12). pp. 2669-2673. ISSN 1080-6040 DOI: 10.3201/eid3012.240695
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We analyzed >4,000 pig samples from slaughterhouses in Cambodia and found higher influenza A seroprevalence (40.0%) and prevalence (1.5%) among pigs from commercial farms than smallholder farms (seroprevalence 8.9%; prevalence 0.6%). Multivariable analyses revealed evidence of transmission after leaving farms. Findings have implications for influenza risk and surveillance in emerging livestock systems.


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