Safety of influenza vaccines in pregnant women.

Prevention of influenza in pregnant women and their newborns through maternal immunization is a safe and effective intervention during seasonal epidemics and a priority during a pandemic. While influenza vaccination of pregnant women has been routine in the United States since the 1950s, coverage rates increased significantly only after the 2009 H1N1 influenza pandemic. Epidemiologic and clinical studies support the safety of inactivated influenza vaccines in pregnant women and their infants. Safety barriers to the use of vaccines during pregnancy can be addressed through research, active surveillance, and education.
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