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Influenza Vaccine Rates in Different States
WHO will work with its partners to address these issues in the new global influenza vaccine action plan, phase II, which will serve as a continuation of the activities of the first GAP. The second phase of GAP will improve the objectives of the first phase, and will provide a technical implementation roadmap and...
With respect to variation of influenza virus, it mainly includes two types, antigenic drift and antigenic shift. Antigenic drift: Caused by point mutations in HA gene and NA gene of influenza virus during replication. It can be found in both type A and type B of influenza virus . Season influenza Antigenic shift: It...
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