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12 Aug, 2009 18:43

“Influenza’s second wave less lethal”

History shows that the second and third waves of influenza becomes less lethal as the population adapts and develops antibodies, says Barbara Loe Fisher from the US national vaccine information center.

People in their 60s, for example, are actually immune to the H1N1 flu as their generation was exposed to this virus in the past

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