HemoChat

Evidence-Based AI Medical Search

← Back to guidelines
Infectious Disease202 papers

Chlamydia trachomatis infection

Last edited: 4/14/2026

Overview

Chlamydia trachomatis is a significant cause of sexually transmitted infections and can lead to serious reproductive health complications if left untreated. It also contributes to blindness in endemic regions due to ocular infections 1.

Diagnosis

  • Nucleic Acid Amplification Tests (NAATs): Highly sensitive and specific for detecting C. trachomatis 20.
  • Direct Fluorescent Antibody (DFA) Test: Used for screening but with lower sensitivity (70%) compared to culture 20.
  • Culture: Gold standard for diagnosis, though less sensitive in clinical settings 20.
  • Plasmid Presence: Investigating the presence of the cryptic plasmid may help understand virulence factors 3.

    • Management

  • First-Line Treatment:
    • - Azithromycin: 1g orally as a single dose or 500mg daily for 3 days 11. - Doxycycline: 100mg orally twice daily for 7 days 11.
  • Adjunctive Measures:
    • - Partner Notification and Treatment: Essential to prevent reinfection 6. - Follow-Up Testing: Recommended 3 months post-treatment to ensure clearance 13.

    Special Populations

  • Pregnancy:
    • - Screening: Recommended for pregnant women aged <25 years 6. - Treatment: Azithromycin is preferred during pregnancy due to its safety profile 11.
  • Comorbidities: No specific management adjustments mentioned for elderly or pediatric populations in the provided abstracts.

    • Key Recommendations

  • Screen Pregnant Women Aged <25 Years for C. trachomatis to prevent perinatal complications (Evidence: Strong 6).
  • Use Azithromycin or Doxycycline as first-line treatments for C. trachomatis infections (Evidence: Moderate 11).
  • Ensure Partner Treatment and Follow-Up Testing post-treatment to reduce reinfection rates (Evidence: Moderate 613).

    • References

    1 Shetty S, Dash S, Kumar A, Vishwanath S, Kini SG, Brand A. Immunoinformatics design of a multi-epitope vaccine for Chlamydia trachomatis major outer membrane proteins. Scientific reports 2024. link 2 Otto G. Towards a chlamydia vaccine. Nature reviews. Microbiology 2021. link 3 Yeow TC, Wong WF, Sabet NS, Sulaiman S, Shahhosseini F, Tan GM et al.. Prevalence of plasmid-bearing and plasmid-free Chlamydia trachomatis infection among women who visited obstetrics and gynecology clinics in Malaysia. BMC microbiology 2016. link 4 Valdivia R, Sedwick C. Raphael Valdivia: how Chlamydia settles in. The Journal of cell biology 2014. link 5 Knittler MR, Berndt A, Böcker S, Dutow P, Hänel F, Heuer D et al.. Chlamydia psittaci: new insights into genomic diversity, clinical pathology, host-pathogen interaction and anti-bacterial immunity. International journal of medical microbiology : IJMM 2014. link 6 Li Z, Chen M, Guy R, Wand H, Oats J, Sullivan EA. Chlamydia screening in pregnancy in Australia: integration of national guidelines into clinical practice and policy. The Australian & New Zealand journal of obstetrics & gynaecology 2013. link 7 Clarke J, White KA, Turner K. Exploring short-term responses to changes in the control strategy for Chlamydia trachomatis. Computational and mathematical methods in medicine 2012. link 8 McGrath CM, Katz AR, Lee MV, Rochat RW. Chlamydia screening of adolescent females: a survey of providers in Hawaii. Journal of community health 2011. link 9 Jones R, Boag F. Screening for Chlamydia trachomatis. BMJ (Clinical research ed.) 2007. link 10 Herrmann B. A new genetic variant of Chlamydia trachomatis. Sexually transmitted infections 2007. link 11 Currie MJ, Bowden FJ. The importance of chlamydial infections in obstetrics and gynaecology: an update. The Australian & New Zealand journal of obstetrics & gynaecology 2007. link 12 Low N. Evaluating novel interventions for chlamydia screening. Sexually transmitted infections 2006. link 13 Siddiqui F, Kirkman RJ, Chandiok S. Re-audit of referral compliance of chlamydia-positive women from a family planning clinic. The journal of family planning and reproductive health care 2004. link 14 Newland JA. Commentary on 'Screening for chlamydia infection: recommendations and rationale'. The American journal of nursing 2002. link 15 Ben-Dov I, Willner I, Zisman E. Piezoelectric immunosensors for urine specimens of Chlamydia trachomatis employing quartz crystal microbalance microgravimetric analyses. Analytical chemistry 1997. link 16 Omura Y, Beckman SL. Application of intensified (+) Qi Gong energy, (-) electrical field, (S) magnetic field, electrical pulses (1-2 pulses/sec), strong Shiatsu massage or acupuncture on the accurate organ representation areas of the hands to improve circulation and enhance drug uptake in pathological organs: clinical applications with special emphasis on the "Chlamydia-(Lyme)-uric acid syndrome" and "Chlamydia-(cytomegalovirus)-uric acid syndrome". Acupuncture & electro-therapeutics research 1995. link 17 Maass M, Harig U. Evaluation of culture conditions used for isolation of Chlamydia pneumoniae. American journal of clinical pathology 1995. link 18 Mancino R, Valli E, Cedrone C, Nucci C, D'Ambrosi E, Cerulli L. The ophthalmologist's role in Chlamydia trachomatis infection. Revue internationale du trachome et de pathologie oculaire tropicale et subtropicale et de sante publique : organe de la Ligue contre le trachome avec la collaboration de l'International Organization against Trachoma et des organisation... 1994. link 19 Melgosa MP, Kuo CC, Campbell LA. Outer membrane complex proteins of Chlamydia pneumoniae. FEMS microbiology letters 1993. link 20 Nelson ME. Prevalence of Chlamydia trachomatis infection among women in a multiphysician primary care practice. American journal of preventive medicine 1992. link 21 Baker CC, Cooper B. A case of good management. The Journal of infection 1983. link95741-9) 22 Goldmeier D, Darougar S. Isolation of Chlamydia trachomatis from throat and rectum of homosexual men. The British journal of venereal diseases 1977. link 23 Lycke E, Peterson M. Hemolysis-in-gel test for demonstration of Chlamydia antibodies. Journal of clinical microbiology 1976. link

    Original source

    1. [1]
      Immunoinformatics design of a multi-epitope vaccine for Chlamydia trachomatis major outer membrane proteins. — Shetty S, Dash S, Kumar A, Vishwanath S, Kini SG, Brand A Scientific reports (2024)
    2. [2]
      Towards a chlamydia vaccine. — Otto G Nature reviews. Microbiology (2021)
    3. [3]
      Prevalence of plasmid-bearing and plasmid-free Chlamydia trachomatis infection among women who visited obstetrics and gynecology clinics in Malaysia. — Yeow TC, Wong WF, Sabet NS, Sulaiman S, Shahhosseini F, Tan GM et al. BMC microbiology (2016)
    4. [4]
      Raphael Valdivia: how Chlamydia settles in. — Valdivia R, Sedwick C The Journal of cell biology (2014)
    5. [5]
      Chlamydia psittaci: new insights into genomic diversity, clinical pathology, host-pathogen interaction and anti-bacterial immunity. — Knittler MR, Berndt A, Böcker S, Dutow P, Hänel F, Heuer D et al. International journal of medical microbiology : IJMM (2014)
    6. [6]
      Chlamydia screening in pregnancy in Australia: integration of national guidelines into clinical practice and policy. — Li Z, Chen M, Guy R, Wand H, Oats J, Sullivan EA The Australian & New Zealand journal of obstetrics & gynaecology (2013)
    7. [7]
      Exploring short-term responses to changes in the control strategy for Chlamydia trachomatis. — Clarke J, White KA, Turner K Computational and mathematical methods in medicine (2012)
    8. [8]
      Chlamydia screening of adolescent females: a survey of providers in Hawaii. — McGrath CM, Katz AR, Lee MV, Rochat RW Journal of community health (2011)
    9. [9]
      Screening for Chlamydia trachomatis. — Jones R, Boag F BMJ (Clinical research ed.) (2007)
    10. [10]
      A new genetic variant of Chlamydia trachomatis. — Herrmann B Sexually transmitted infections (2007)
    11. [11]
      The importance of chlamydial infections in obstetrics and gynaecology: an update. — Currie MJ, Bowden FJ The Australian & New Zealand journal of obstetrics & gynaecology (2007)
    12. [12]
      Evaluating novel interventions for chlamydia screening. — Low N Sexually transmitted infections (2006)
    13. [13]
      Re-audit of referral compliance of chlamydia-positive women from a family planning clinic. — Siddiqui F, Kirkman RJ, Chandiok S The journal of family planning and reproductive health care (2004)
    14. [14]
      Commentary on 'Screening for chlamydia infection: recommendations and rationale'. — Newland JA The American journal of nursing (2002)
    15. [15]
      Piezoelectric immunosensors for urine specimens of Chlamydia trachomatis employing quartz crystal microbalance microgravimetric analyses. — Ben-Dov I, Willner I, Zisman E Analytical chemistry (1997)
    16. [16]
      Application of intensified (+) Qi Gong energy, (-) electrical field, (S) magnetic field, electrical pulses (1-2 pulses/sec), strong Shiatsu massage or acupuncture on the accurate organ representation areas of the hands to improve circulation and enhance drug uptake in pathological organs: clinical applications with special emphasis on the "Chlamydia-(Lyme)-uric acid syndrome" and "Chlamydia-(cytomegalovirus)-uric acid syndrome". — Omura Y, Beckman SL Acupuncture & electro-therapeutics research (1995)
    17. [17]
      Evaluation of culture conditions used for isolation of Chlamydia pneumoniae. — Maass M, Harig U American journal of clinical pathology (1995)
    18. [18]
      The ophthalmologist's role in Chlamydia trachomatis infection. — Mancino R, Valli E, Cedrone C, Nucci C, D'Ambrosi E, Cerulli L Revue internationale du trachome et de pathologie oculaire tropicale et subtropicale et de sante publique : organe de la Ligue contre le trachome avec la collaboration de l'International Organization against Trachoma et des organisation... (1994)
    19. [19]
      Outer membrane complex proteins of Chlamydia pneumoniae. — Melgosa MP, Kuo CC, Campbell LA FEMS microbiology letters (1993)
    20. [20]
      Prevalence of Chlamydia trachomatis infection among women in a multiphysician primary care practice. — Nelson ME American journal of preventive medicine (1992)
    21. [21]
      A case of good management. — Baker CC, Cooper B The Journal of infection (1983)
    22. [22]
      Isolation of Chlamydia trachomatis from throat and rectum of homosexual men. — Goldmeier D, Darougar S The British journal of venereal diseases (1977)
    23. [23]
      Hemolysis-in-gel test for demonstration of Chlamydia antibodies. — Lycke E, Peterson M Journal of clinical microbiology (1976)
    Share:TwitterRedditLinkedIn

    HemoChat

    by SPINAI

    Evidence-based clinical decision support powered by SNOMED-CT, Neo4j GraphRAG, and NASS/AO/NICE guidelines.

    ⚕ For clinical reference only. Not a substitute for professional judgment.

    © 2026 HemoChat. All rights reserved.
    Research·Pricing·Privacy & Terms·Refund·SNOMED-CT · NASS · AO Spine · NICE · GraphRAG