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Prenatal Syphilis Screening Mandates and Maternal Syphilis Case Detection.

Sarah E Baum1, Leila Agha2, Nicolas A Menzies1

  • 1Department of Global Health and Population, Harvard T. H. Chan School of Public Health, Boston, Massachusetts.

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Summary
This summary is machine-generated.

Expanded prenatal syphilis screening mandates increased maternal syphilis case detection shortly after implementation. However, sustained impact requires improved clinician adherence and patient treatment access.

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Area of Science:

  • Public Health
  • Epidemiology
  • Infectious Disease Prevention

Background:

  • Congenital syphilis rates are rising in the US despite existing screening mandates.
  • First-trimester screening alone is insufficient, prompting recommendations for repeat screening in the third trimester and at delivery.
  • Evidence on the effectiveness of expanded prenatal syphilis screening mandates is limited.

Purpose of the Study:

  • To evaluate the effectiveness of expanded prenatal syphilis screening mandates on syphilis case detection during pregnancy.
  • To assess the impact of third-trimester and delivery screening mandates on maternal syphilis case detection.

Main Methods:

  • A staggered difference-in-differences analysis of birth certificate data from 33 US states (2012-2022).
  • Compared maternal syphilis case detection in 4 states with new third-trimester/delivery screening mandates against 29 control states.
  • Analyzed inpatient discharge records from Georgia to assess changes in screening coverage.

Main Results:

  • Expanded screening mandates were associated with a 26% increase in maternal syphilis case detection in the first quarter post-enactment.
  • This increase attenuated over time, with no significant association found within one year (11% increase).
  • The study included 16.3 million births and over 20,000 syphilis cases.

Conclusions:

  • Expanded prenatal syphilis screening mandates show a short-term benefit in detecting maternal syphilis cases.
  • Sustained impact necessitates complementary strategies focusing on clinician adherence and patient treatment access.
  • Further research is needed to optimize screening protocols and ensure effective treatment completion.