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From H1N1 to H5N2, What's in a Flu Name?
Catch up with NBC News Clone on today's hot topic: From H1n1 To H5n2 Whats In A Flu Name 462497347612 - Breaking News | NBC News Clone. Our editorial team reformatted this story for clarity and speed.
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Every flu virus has an "H" and an "N" in the name.Oct. 29, 2015
