Association between influenza vaccination during pregnancy and infant influenza vaccination in a privately insured population
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Association between influenza vaccination during pregnancy and infant influenza vaccination in a privately insured population

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English
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  • Alternative Title:
    Obstet Gynecol
  • Personal Author:
  • Description:
    Background:

    Influenza vaccination during pregnancy is safe and effective in preventing severe influenza illness for pregnant people and their infants in the first few months of life. Little is known about whether influenza vaccination status during pregnancy predicts future infant influenza vaccination.

    Objective:

    Examine the association between influenza vaccination during pregnancy and infant influenza vaccination.

    Methods:

    Retrospective analysis of beneficiaries aged 15–49 years who were continually privately insured from August 2017 to May 2019 and delivered singleton, live births from September 2017 through February 2018 and their infants. Influenza vaccination coverage was assessed for pregnant people during the 2017–18 influenza season and their infants during the 2018–19 season using the 2017–2019 MarketScan data. Multivariate log-binomial regressions were conducted to examine the association between influenza vaccination during pregnancy and infant influenza vaccination.

    Results:

    Of the 34,919 pregnant people in this analysis, 14,168 (40.6%) received influenza vaccination during pregnancy. Of the infants born to people vaccinated during pregnancy, 90.0% received ≥1 dose and 75.5% received ≥2 doses of influenza vaccine during the 2018–19 season. Of the infants born to those not vaccinated during pregnancy, 66.3% received ≥1 dose and 51.8% received ≥2 doses of influenza vaccine. There was a 35.7% higher in ≥1 dose coverage (adjusted risk ratio [ARR] 1.34 [95% CI: 1.33–1.36]) and a 45.8% higher in ≥2 dose coverage (ARR 1.43 [95% CI:1.41–1.46]) for infants born to people who received influenza vaccination during pregnancy compared with infants born to people who did not.

    Conclusion:

    Our results show a positive and statistically significant relationship between influenza vaccination during pregnancy and infant influenza vaccination status in their first season eligible for vaccination. Interventions to increase influenza vaccination coverage among pregnant people may also increase infant influenza vaccination coverage, offering greater protection against serious complications of influenza in both vulnerable populations.

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  • Source:
    Obstet Gynecol. 141(3):563-569
  • Pubmed ID:
    36728080
  • Pubmed Central ID:
    PMC11259230
  • Document Type:
    Journal Article
  • Funding:
    CC999999/ImCDC/Intramural CDC HHSUnited States/
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