Having influenza a and b at the same time

Influenza flu viral strain A is seen during the early season of spring and winter. B is seen at any time. Generally the infection of both A and B is very rare but is always possible. There have been cases with both A and B infections.

TAGS:What is influenza B? What is is influenza type b? When was the influenza A and B discovered? Is influenza a the same as swine flu? Is type a influenza the same as H1N1?

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