Reinfection by untreated partners of people treated for Chlamydia trachomatis and Neisseria gonorrhoeae: mathematical modelling study.

Objectives: Reinfection after treatment for Chlamydia trachomatis or Neisseria gonorrhoeae reduces the effect of control interventions. We explored the impact of delays in treatment of current partners on the expected probability of reinfection of index cases using a mathematical model.

Methods: We used previously reported parameter distributions to calculate the probability that index cases would be reinfected by their untreated partners.

Insights into the timing of repeated testing after treatment for Chlamydia trachomatis: data and modelling study.

Objectives: The objective of this study was to determine the optimal time interval for a repeated Chlamydia trachomatis (chlamydia) test.

Methods: The authors used claims data for US women aged 15-25 years who were enrolled in commercial health insurance plans in the MarketScan database between 2002 and 2006. The authors determined the numbers of initial positive and negative tests that were followed by a repeated test and the positivity of repeated tests.