CDC recommends that pregnant women get a flu shot during any trimester of their pregnancy to protect themselves and their newborn babies from flu. There is a lot of evidence that flu vaccines can be given safely during pregnancy, though these data are limited for the first trimester. The nasal spray vaccine is not recommended for use in pregnant women. To learn more about flu and pregnant women, please visit Pregnant Women & Influenza (Flu).
Pregnant women are among the highest people at risk for complications and death from influenza illness. Despite the disappointingly low efficacy of the current vaccine, a 1/3 chance of protection is better than no chance when so much is at stake.