NHS begins rollout of updated flu vaccine including protection against subclade K strain
The UK NHS has started administering an updated seasonal flu vaccine. The vaccine includes protection against the 'Super-K' subclade, with schoolchildren and pregnant women receiving it first. The rollout is just beginning, and its effectiveness against this year's circulating strains is not yet known. 'Super-K' is a media label for a subclade, not a medical term indicating increased severity.
Why it matters
This is a direct response to the emergence of a new flu subclade, showing the national health system can adapt its vaccination program to address evolving viral threats.
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