Emerging Infectious Diseases (Jul 2022)

Natural Reassortment of Eurasian Avian-Like Swine H1N1 and Avian H9N2 Influenza Viruses in Pigs, China

  • Wanying Sun,
  • Samuel S.M. Cheng,
  • Kristy N.T. Lam,
  • Tsz C. Kwan,
  • Ricky W.K. Wong,
  • Leo H.K. Lau,
  • Gigi Y.Z. Liu,
  • Leo L.H. Luk,
  • John K.C. Li,
  • Haogao Gu,
  • Malik Peiris,
  • Leo L.M. Poon

DOI
https://doi.org/10.3201/eid2807.220642
Journal volume & issue
Vol. 28, no. 7
pp. 1509 – 1512

Abstract

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Several zoonotic influenza A viruses detected in humans contain genes derived from avian H9N2 subtypes. We uncovered a Eurasian avian-like H1N1 swine influenza virus with polymerase basic 1 and matrix gene segments derived from the H9N2 subtype, suggesting that H9N2 viruses are infecting pigs and reassorting with swine influenza viruses in China.

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