Emerging Infectious Diseases (Dec 2024)

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

  • Arata Hidano,
  • Dina Koeut,
  • Hannah Holt,
  • William T.M. Leung,
  • Sokhom Krean,
  • Vutha Chhim,
  • Bunnary Seng,
  • Sovanncheypo Chao,
  • Wong Foong Ying,
  • Pov Son,
  • Sina Vor,
  • Sokchea Huy,
  • Ty Chhay,
  • Sothyra Tum,
  • San Sorn,
  • Monidarin Chou,
  • Yvonne C.F. Su,
  • Gavin J.D. Smith,
  • James W. Rudge

DOI
https://doi.org/10.3201/eid3012.240695
Journal volume & issue
Vol. 30, no. 12
pp. 2669 – 2673

Abstract

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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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