The Centers for Disease Control and Prevention's Advisory Committee on Immunization Practices currently recommends pregnant women receive vaccines for influenza and tetanus, diphtheria, and acellular pertussis (Tdap).

The study, "Infant Hospitalizations and Mortality Following Maternal Vaccination" in the 2018 March issue of Pediatrics (published online Feb. 20) looked at vaccine-related health risks during the first 6 months of life for infants whose mothers received these vaccines during pregnancy.

Researchers used a case-controlled study of more than 400,000 infants between 2004 and 2014 and found no increased risk of infant hospitalization or death following vaccination in pregnancy. The researchers concluded that this study reinforces the long-term safety of giving vaccines during pregnancy.