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Did the flu variant H3N2/K emerge before this year's vaccine was formulated?
A new influenza A(H3N2) virus strain renamed "H3N2 subclade K," which is circulating widely today, was identified by health organizations months after the seasonal influenza vaccine was developed.AllSides highlights content from Gigafact, a network of newsrooms that respond to online claims. View the full fact brief on CT Mirror.