Dogs are highly susceptible to H5N1 avian influenza virus

  • Ying Chen
  • , Gongxun Zhong
  • , Guojun Wang
  • , Guohua Deng
  • , Yanbing Li
  • , Jianzhong Shi
  • , Zhuo Zhang
  • , Yuntao Guan
  • , Yongping Jiang
  • , Zhigao Bu
  • , Yoshihiro Kawaoka
  • , Hualan Chen

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

Abstract

Replication of avian influenza viruses (AIVs) in dogs may facilitate their adaptation in humans; however, the data to date on H5N1 influenza virus infection in dogs are conflicting. To elucidate the susceptibility of dogs to this pathogen, we infected two groups of 6 beagles with 106 50% egg-infectious dose of H5N1 AIV A/bar-headed goose/Qinghai/3/05 (BHG/QH/3/05) intranasally (i.n.) and intratracheally (i.t.), respectively. The dogs showed disease symptoms, including anorexia, fever, conjunctivitis, labored breathing and cough, and one i.t. inoculated animal died on day 4 post-infection. Virus shedding was detected from all 6 animals inoculated i.n. and one inoculated i.t. Virus replication was detected in all animals that were euthanized on day 3 or day 5 post-infection and in the animal that died on day 4 post-infection. Our results demonstrate that dogs are highly susceptible to H5N1 AIV and may serve as an intermediate host to transfer this virus to humans.

Original languageEnglish
Pages (from-to)15-19
Number of pages5
JournalVirology
Volume405
Issue number1
DOIs
StatePublished - Sep 2010
Externally publishedYes

Keywords

  • Dogs
  • H5N1 influenza virus
  • Replication

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