MMWR Morb Mortal Wkly Rep

IntroductionVaccinating pregnant women with influenza vaccine and tetanus toxoid, reduced diphtheria toxoid, and acellular pertussis vaccine (Tdap) can reduce influenza and pertussis risk for themselves and their infants.MethodsSurveillance data were analyzed to ascertain influenza-associated hospitalization among pregnant women and infant hospitalization and death associated with influenza and pertussis. An Internet panel survey was conducted during March 27\u2013April 8, 2019, among women aged 18\u201349 years who reported being pregnant any time since August 1, 2018. Influenza vaccination before or during pregnancy was assessed among respondents with known influenza vaccination status who were pregnant any time during October 2018\u2013January 2019 (2,097). Tdap receipt during pregnancy was assessed among respondents with known Tdap status who reported a live birth by their survey date (817).ResultsFrom 2010\u201311 to 2017\u201318, pregnant women accounted for 24%\u201334% of influenza-associated hospitalizations per season among females aged 15\u201344 years. From 2010 to 2017, a total of 3,928 pertussis-related hospitalizations were reported among infants aged