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Abstract

We report a summer influenza epidemic caused by co-circulation of multiple influenza A(H3N2) variants in clade 3C.2a. Compared with other clades, a putative clade 3C.2a.3a was more commonly isolated from severely ill patients; 3C.2a.4 was more commonly isolated in outbreak cases. Time from vaccination to illness onset was significantly shorter in severely ill patients infected with clade 3C.2a.3; characteristics and outcomes of patients infected with different clades were similar. No resistance to antiviral medications was found.

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/content/10.2807/1560-7917.ES.2017.22.50.17-00767
2017-12-14
2018-12-18
http://instance.metastore.ingenta.com/content/10.2807/1560-7917.ES.2017.22.50.17-00767
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