CDC – Seasonal Influenza (Flu) – Q & A: 2006-07 Influenza (Flu) Season

In the early months of the season, the majority of influenza A (H3) viruses circulating in the country matched the influenza A ( H3N2 ) component of the 2006–07 vaccine. However, the proportion of H3N2 viruses similar to the H3N2 vaccine …

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CDC – Seasonal Influenza (Flu) – Q & A: 2006-07 Influenza (Flu) Season

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