Answers are grounded in this paper and cite their sources.
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.
No takes yet. Share an insight, caveat, or question.
Tsou et al. (2017) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: