Clinician education, advice and SMS/text reminders improve test of reinfection rates following diagnosis of Chlamydia trachomatis or Neisseria gonorrhoeae: before and after study in primary care

Background Evidence-based guidelines for the management of Chlamydia trachomatis and Neisseria gonorrhoeae recommend testing for reinfection 3–6 months following treatment, but retesting rates are typically low. Methods Participants included six primary care clinics taking part in a pilot study of strategies designed to improve partner notification, follow-up and testing for reinfection. Rates of retesting between 6 weeks and 6 months of a positive chlamydia or gonorrhoea diagnosis were compared across two time periods: (1) a historical control period (no systematic approach to retesting) and (2) during an intervention period involving clinician education, patient advice about reinfection risk reduction and retesting, and short messaging service/text reminders sent 2–3 months post-treatment inviting return for retesting. Retesting was calculated for demographic subgroups (reported with 95% CI). Results Overall 25.4% (61 of 240, 95% CI 20.0 to 31.4) were retested during the control period and 47.9% (116 of 242, 95% CI 43.2 to 55.1) during the intervention period. Retesting rates increased across most demographic groups, with at least twofold increases observed for men, those aged 20–29 years old, and Māori and Pasifika ethnic groups. No significant difference was observed in repeat positivity rates for the two time periods, 18% (11 of 61) retested positive during the control and 16.4% (19 of 116) during the intervention period (p>0.05). Conclusions Clinician and patient information about retesting and a more systematic approach to follow-up resulted in significant increases in proportions tested for reinfection within 6 months. These simple strategies could readily be implemented into primary healthcare settings to address low rates of retesting for bacterial sexually transmitted infections. Trial registration number ACTRN12616000837426.