H1N1 influenza in pregnancy: risks, vaccines, and antivirals.

When pregnant women are infected by the H1N1 influenza A virus, the consequences are more serious than they are in other groups of patients. It is imperative to vaccinate pregnant women against this virus. Unvaccinated women who come in contact with the virus should receive prophylactic antiviral therapy. The existing information on the safety of oseltamavir and zanamavir, the most used antivirals, is limited but reassuring.