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Published online 26 August 2002 | Nature | doi:10.1038/news020819-14

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Deadly flu evades body's defences

Virus treats the immune system like "duck soup".

The lethal Hong Kong influenza is invisible to our body's immune defences, new research shows. The finding could help to identify future dangerous 'flu strains and perhaps explain why 'flu outbreaks of the past were so deadly1.

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