Incidence and predictors of reinfection with Trichomonas vaginalis in HIV-infected women

Sex Transm Dis. 2000 May;27(5):284-8. doi: 10.1097/00007435-200005000-00009.


Background and objectives: The presence of sexually transmitted infections (STIs) may facilitate transmission of HIV to uninfected partners.

Goal: To describe the incidence of reinfection with Trichomonas vaginalis in HIV-infected women and to assess predictors of reinfection.

Study design: A retrospective cohort study using data abstracted from medical records of HIV-infected women with at least one diagnosis of trichomoniasis.

Results: Approximately one third (36%) of the study population was reinfected with T vaginalis during the follow-up period, with an incidence of 16.4 reinfections per 100 person years. Significant predictors of reinfection included history of another STI (hazard ratio, 1.52; 95% CI, 1.08-2.14) and becoming pregnant during the follow-up period (hazard ratio, 0.59; 95% CI, 0.39-0.87).

Conclusions: There is a high rate of reinfection with T vaginalis in HIV-infected women. Further research that includes information on sexual partners should be conducted to better describe the reinfection patterns of trichomoniasis.

MeSH terms

  • Adult
  • Animals
  • Cohort Studies
  • Female
  • HIV Infections / complications*
  • Humans
  • Incidence
  • Pregnancy
  • Recurrence
  • Retrospective Studies
  • Risk Factors
  • Trichomonas Vaginitis / complications*
  • Trichomonas Vaginitis / epidemiology*
  • Trichomonas Vaginitis / parasitology
  • Trichomonas vaginalis*