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Routine Treatment Versus Selective Treatment for Individuals Reporting Contact With Sexual Partners With Chlamydia: A

Danushi Wijekoon1, Marcus Y Chen1,2, Yasmin Hughes1,2

  • 1Melbourne Sexual Health Centre, Alfred Health, Melbourne, Victoria, Australia.

The Journal of Infectious Diseases
|March 4, 2025
PubMed
Summary
This summary is machine-generated.

Selective chlamydia treatment reduced antibiotic use by treating only positive cases, minimizing unnecessary treatments and clinic workload. This approach proved effective without increasing treatment failures.

Keywords:
antibioticchlamydiacontact tracingresistancetreatment

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Area of Science:

  • Sexual health
  • Infectious disease epidemiology
  • Public health interventions

Background:

  • International guidelines advocate routine chlamydia treatment for sexual contacts.
  • Melbourne Sexual Health Centre (MSHC) shifted from routine to selective treatment in October 2019.
  • Selective treatment reserves same-day treatment for positive tests, symptomatic individuals, or specific clinical reasons.

Purpose of the Study:

  • To evaluate the impact of shifting from routine to selective chlamydia contact treatment.
  • To assess changes in treatment rates, unnecessary treatments, and treatment outcomes.

Main Methods:

  • A before-and-after study design was employed at MSHC.
  • Data were compared between a 12-month routine treatment period (Dec 2018-Oct 2019) and a 12-month selective treatment period (Nov 2019-Dec 2020).
  • Analysis included chlamydia positivity, pre-result treatment proportions, reasons for treatment, and treatment outcomes.

Main Results:

  • Chlamydia positivity among contacts was 31.9%.
  • Pre-result treatment decreased significantly from 91% to 56% (p<0.0001).
  • Unnecessary treatment (treated but negative) rates remained unchanged (65% vs. 66%, p=0.750), as did the proportion of treated individuals testing positive (35% vs. 34%, p=0.750).

Conclusions:

  • Selective treatment significantly reduced pre-result antibiotic administration.
  • The shift likely decreased clinic workload by minimizing unnecessary treatments.
  • The selective approach maintained treatment effectiveness without compromising outcomes for chlamydia contacts.