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Infectious Disease17 papers

Venereal disease caused by Chlamydia trachomatis

Last edited: 4/10/2026

Overview

Chlamydia trachomatis* is a bacterial sexually transmitted infection (STI) that has increased in the United States 1.
  • Few chemoprophylaxis options exist for bacterial STIs, including chlamydia 1.
  • Diagnosis

  • No specific diagnostic criteria or grading are mentioned in the provided abstracts.
  • Management

  • Doxycycline postexposure prophylaxis (doxy PEP) is recommended for bacterial STI prevention 1.
  • The recommended dose for doxy PEP is 200 mg, not to exceed 200 mg every 24 hours 1.
  • Doxy PEP should be self-administered within 72 hours after oral, vaginal, or anal sex 1.
  • Doxy PEP should be implemented within a comprehensive sexual health approach, including risk reduction counseling and STI screening 1.
  • Special Populations

  • No specific information is provided for pregnancy, pediatrics, elderly, or comorbidities.
  • Key Recommendations

  • For gay, bisexual, and other men who have sex with men (MSM) and transgender women (TGW) diagnosed with a bacterial STI in the past 12 months, counseling regarding the use of doxycycline postexposure prophylaxis (doxy PEP) to prevent bacterial STIs should be provided 1. (Evidence: Strong)
  • Providers should offer MSM and TGW who have had a bacterial STI diagnosed in the past 12 months a prescription for doxy PEP to be self-administered within 72 hours after sex, following shared decision-making 1. (Evidence: Strong)
  • The recommended dose of doxy PEP is 200 mg, not to exceed 200 mg every 24 hours 1. (Evidence: Strong)
  • References

    1 Bachmann LH, Barbee LA, Chan P, Reno H, Workowski KA, Hoover K et al.. CDC Clinical Guidelines on the Use of Doxycycline Postexposure Prophylaxis for Bacterial Sexually Transmitted Infection Prevention, United States, 2024. MMWR. Recommendations and reports : Morbidity and mortality weekly report. Recommendations and reports 2024. link

    Original source

    1. [1]
      CDC Clinical Guidelines on the Use of Doxycycline Postexposure Prophylaxis for Bacterial Sexually Transmitted Infection Prevention, United States, 2024.Bachmann LH, Barbee LA, Chan P, Reno H, Workowski KA, Hoover K et al. MMWR. Recommendations and reports : Morbidity and mortality weekly report. Recommendations and reports (2024)

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