A girl in Hong Kong wears a protective mask amid a flu outbreak that has claimed over 100 lives this season. Photo: Dickson Lee

Flu fighters: WHO expert reveals story behind mismatched influenza vaccines in HK and world

Virulence of H3 virus as well as time lag between world health body's recommendations and vaccine roll-out to blame, says scientist

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A girl in Hong Kong wears a protective mask amid a flu outbreak that has claimed over 100 lives this season. Photo: Dickson Lee
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