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The world is experiencing a pandemic of influenza in birds caused by an H5N1 virus. Although it has been restricted to Eurasia and some countries in Africa, there is a risk that this virus may spread worldwide
Vaccine protects against bird flu Oct 20, 2008
I'm not surprised to find that the pandemic virus is more infectious, simply because it's new, so hosts haven't had a chance to build immunity yet
H1N1 flu may not mutate with seasonal flu Sep 01, 2009
Daniel Pérez may refer to: