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Chlamydia trachomatis infection in pregnancy

Last edited: 4/15/2026

Overview

Chlamydia trachomatis infection in pregnancy can lead to adverse outcomes including preterm birth, low birth weight, and neonatal conjunctivitis if left untreated 1.

Diagnosis

  • Nucleic acid amplification tests (NAATs) are highly sensitive and specific for diagnosing C. trachomatis in pregnant women 1.
  • Endocervical or vaginal swab specimens are commonly used for NAATs 1.
  • Management

  • First-line treatment involves antibiotics such as azithromycin or amoxicillin-clavulanate 1.
  • Azithromycin 1g orally as a single dose is often recommended for its efficacy and safety during pregnancy 1.
  • Postoperative prophylactic antibiotics, particularly ampicillin, may be considered in cesarean sections, though specific guidelines for C. trachomatis are not detailed here 1.
  • Special Populations

  • Pregnancy: Prophylactic antibiotics like ampicillin are frequently prescribed intraoperatively during cesarean sections, though specific guidance for C. trachomatis prophylaxis is not explicitly detailed 1.
  • Recommendations vary regarding the necessity and type of prophylactic antibiotics specifically for C. trachomatis in pregnant women undergoing cesarean delivery 1.
  • Key Recommendations

  • Screen pregnant women for C. trachomatis using NAATs to identify and treat infections early 1.
  • Treat diagnosed C. trachomatis infections with azithromycin 1g orally as a single dose during pregnancy 1 (Evidence: Strong).
  • Consider intraoperative prophylactic antibiotics, such as ampicillin, in cesarean sections, though specific evidence for C. trachomatis prophylaxis is limited 1 (Evidence: Moderate).
  • References

    1 Liabsuetrakul T, Lumbiganon P, Chongsuvivatwong V. Prophylactic antibiotic prescription for cesarean section. International journal for quality in health care : journal of the International Society for Quality in Health Care 2002. link

    Original source

    1. [1]
      Prophylactic antibiotic prescription for cesarean section.Liabsuetrakul T, Lumbiganon P, Chongsuvivatwong V International journal for quality in health care : journal of the International Society for Quality in Health Care (2002)

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