Health ❯ Infectious Diseases ❯ Influenza ❯ H3N2

Subclade K

New H3N2 Variant Emerges as Canada’s Flu Season Starts and U.S. Activity Remains Low

Early data point to partial vaccine protection against the novel strain.

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New H3N2 ‘Subclade K’ Drives Early Flu Surges as U.S. Officials Urge Vaccination