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2021-1-24 10:11:49

Yu D, et al. The re-emergence of highly pathogenic avian influenza H7N9 viruses in humans in mainland China, 2019. Euro Surveill. 2019 May;24(21).
submited by kickingbird at May, 31, 2019 15:48 PM from Euro Surveill. 2019 May;24(21).

After no reported human cases of highly pathogenic avian influenza (HPAI) H7N9 for over a year, a case with severe disease occurred in late March 2019. Among HPAI H7N9 viral sequences, those recovered from the case and from environmental samples of a poultry slaughtering stall near their home formed a distinct clade from 2017 viral sequences. Several mutations possibly associated to antigenic drift occurred in the haemagglutinin gene, potentially warranting update of H7N9 vaccine strains.

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