Why influenza virus is dangerous?

Started by Gwilym, July 26, 2018, 05:29:40 PM

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Kyan

July 26, 2018, 05:29:40 PM
Hi, I'd like to ask you a big question that has been in my head for a while, and I can not find an answer, why influenza virus is dangerous? Thank you kindly answer me please quickly because I stress.
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