Influenza and acellular pertussis vaccinations during pregnancy were not associated with hospitalization or death of infants in the first 6 months of life, according to recently published study results in Pediatrics.

“In our study of maternal influenza and [acellular pertussis (Tdap)] vaccines, we found no increased risk of infant all-cause hospitalizations, hospitalization from respiratory causes, or all-cause mortality in the first 6 months of life,” Lakshmi Sukumaran, MD, MPH, of the Immunization Safety Office, CDC, and colleagues wrote. “… Our findings are similar to other studies that have evaluated infant mortality and morbidity after maternal vaccination in pregnancy, most of which have evaluated the safety of adjuvanted H1N1 influenza-containing vaccines.”

“Our findings are also consistent with studies in which researchers have evaluated infant mortality and morbidity after Tdap vaccination in pregnancy,” the researchers added.