A strain (H1N1)
A strain (H3N2)
B strain (Victoria)
B strain (Yamagata)
Flu A and flu B strains co-circulate in the US nearly every flu season2
FLUMIST QUADRIVALENT is a vaccine indicated for active immunization of persons 2-49 years of age for the prevention of influenza disease caused by influenza A subtype viruses and type B viruses contained in the vaccine. FLUMIST QUADRIVALENT is for intranasal administration only.
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