CompletedNot Applicable

The Safety of Boostrix Following Routine Immunization of Pregnant Women

United States65,783 participantsStarted 2018-04-13

Plain-language summary

The purpose of this study was to assess the safety of Boostrix administered on or after the first day of the 27th week of pregnancy by conducting a post-marketing study that provided safety information to the public and healthcare providers. This was one of the largest cohorts of pregnant women vaccinated with Boostrix in the U.S. Through partnership between Kaiser Permanente Southern California (KPSC) and the sponsor, GlaxoSmithKline (GSK), information about the safety of maternal vaccination with Boostrix and maternal and infant adverse events (AEs) in a community setting was gained.

Who can participate

SexFEMALE

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * Pregnant women with prenatal care and continuous membership (allowing up to a 31-day gap) at KPSC between the 1st day of the 27th week of pregnancy and the index (vaccination) date. * Exposed cohort (from the 27th week of gestation): Pregnant women vaccinated with Boostrix on or after the 1st day of the 27th week of pregnancy; who were not vaccinated with any other Tdap vaccine at any other time during the pregnancy in scope of this study. * Unexposed cohort: Women matched to the exposed cohort and pregnant sometime during the approximate estimated period between January 1, 2012-December 31, 2014 and did not receive any Tdap vaccine during the pregnancy in scope of this study. For the analysis of congenital anomalies among live births, at birth and through six months of age, the following additional inclusion criteria for infants will be applied: * Live born * Born in KPSC hospitals Note: Pregnant women vaccinated with Boostrix during pregnancy before the 27th week of gestation, with membership at the date of vaccination, and who were not vaccinated with any other Tdap vaccine at any other time during the pregnancy in scope of this study will be part of a descriptive analysis (secondary objective).

What they're measuring

Incidence Rate (Per 1000 Person-years) of Pre-specified Maternal Adverse Events for Exposed Cohort women-on or After 1st Day of 27th Week of Pregnancy and Unexposed Historical Cohort-women Groups

Timeframe: From date of Boostrix vaccination (Exposed cohort women-on or after 1st day of 27th week of pregnancy) or from an index date (Unexposed historical cohort women) until end of enrollment or pregnancy, whichever came first, up to 13 weeks

Incidence Rate (Per 1000 Persons) of Prespecified Maternal Adverse Events for Exposed Cohort women-on or After 1st Day of 27th Week of Pregnancy and Unexposed Historical Cohort Women Groups

Incidence Rate (Per 1000 Persons) of Pre-specified Infant Adverse Events for Exposed Cohort infants-on or After 1st Day of 27th Week of Pregnancy and Unexposed Historical Cohort Infants Groups

Timeframe: From birth through 6 months of age

Trial details

NCT IDNCT03463577

SponsorGlaxoSmithKline

Sponsor typeINDUSTRY

Study typeOBSERVATIONAL

Primary completion2020-08-04

Results submitted2021-11-30

View on ClinicalTrials.gov More Whooping Cough trials