Bird flu: The global threat
Science In Action
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The H5N1 Flu Virus in 2009
H5N1 has not made it into the main viral mixing pot from which we usually get pandemic strains of flu pigs. In fact, the H1N1 outbreak of influenza in 2009 is actually a virus that came from pigs in Mexico. Tysk Heikon: "Pigs are known to be a so-called mixing vessel for different influenza viruses from birds, from humans"
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