Sex Transm Infect 79:260-261 doi:10.1136/sti.79.3.260
  • Original Article

Late recurrence of resistant Trichomonas vaginalis vaginitis: relapse or re-infection?

  1. M Kanno1,*,
  2. J D Sobel2
  1. 1Division of Infectious Diseases, Department of Medicine, Detroit Medical Center, Harper Hospital, Detroit, Michigan, USA
  2. 2Wayne State University School of Medicine
  1. Correspondence to:
 Jack Sobel; 
  • Accepted 29 November 2002


Distinguishing between re-infection and relapse of trichomonas infections is often a difficult task in the clinical setting. The chronicity of trichomonas infections and the ongoing sexual activity are two confounding factors. We present a patient with recurrent resistant vaginal trichomoniasis shortly following a sexual contact with an untreated partner after a complete response to treatment with tinidazole for nine months. We hypothesise that re-infection occurred from the asymptomatic partner who was an untreated chronic carrier of resistant trichomonas in the urogenital tract.


  • * Currently at Johns Hopkins University, Division of Infectious Diseases