MIT scientists identify new H1N1 mutation that could allow virus to spread more easily

Wednesday, March 9, 2011 - 23:00 in Health & Medicine

In the fall of 1917, a new strain of influenza swirled around the globe. At first, it resembled a typical flu epidemic: Most deaths occurred among the elderly, while younger people recovered quickly. However, in the summer of 1918, a deadlier version of the same virus began spreading, with disastrous consequence. In total, the pandemic killed at least 50 million people — about 3 percent of the world's population at the time.

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