In 2022, a boy with influenza-like symptoms was found to be infected with a novel
H3N8 avian influenza virus in Henan province.
1
,
2
,
3
,
4
Subsequently, in May 2022 H3N8 avian influenza virus caused a second human infection
in Hunan province. The H3N8 human viruses originated from chickens
3
,5
, but its RNA was also detected in nasopharyngeal swabs of cats and dogs and environmental
samples collected in the patient's house.
4
Of note, the full-length HA sequences from pets and human patients were identical,
but revealed differences to avian H3N8 suggesting adaption to mammalian hosts. In
addition, a veterinarian was infected with a low pathogenic avian influenza virus
H7N2 in 2016 while collecting samples from an influenza outbreak at a cat shelter
in New York City.
6
This indicates that companion animals might be previously overlooked intermediate
hosts for the cross-species transmission of influenza viruses to humans, emphasizing
that monitoring influenza virus in pets and analyzing mutations for mammalian adaptation
is of great importance for public health.- Lee C.T.
- Slavinski S.
- Schiff C.
- Merlino M.
- Daskalakis D.
- Liu D.
- et al.
Outbreak of influenza A(H7N2) among cats in an animal shelter with cat-to-human transmission-New
York city, 2016.
Clin. Infect Dis. 2017; 65 (an official publication of the Infectious Diseases Society of AmericaNov 13 PubMed
PMID: 29020187. Epub 2017/10/12. eng): 1927-1929
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Article info
Publication history
Published online: December 11, 2022
Accepted:
December 8,
2022
Identification
Copyright
© 2022 The British Infection Association. Published by Elsevier Ltd. All rights reserved.