Researchers explain spread of 1918 flu pandemic

MIT researchers have explained why two mutations in the H1N1 avian flu virus were critical for viral transmission in humans during the 1918 pandemic outbreak that killed at least 50 million people.

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<p><a href="http://www.physorg.com/news122576950.html">Researchers explain spread of 1918 flu pandemic</a></p> <p>MIT researchers have explained why two mutations in the H1N1 avian flu virus were critical for viral transmission in humans during the 1918 pandemic outbreak that killed at least 50 million people.</p>