Why can you still get influenza if you've had a flu shot? - The Conversation

Flu vaccinations protect against four subtypes of influenza. But we don’t know what subtypes will circulate this flu season.

Restrictions have eased, international borders are open and influenza is back in Australia after a two-year absence. Suddenly, major flu outbreaks are occurring across the country, catching many of… [+5269 chars]

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