What are risk factors for T vaginalis infection?

Updated: Jan 02, 2020
  • Author: Darvin Scott Smith, MD, MSc, DTM&H; Chief Editor: Michael Stuart Bronze, MD  more...
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Answer

The risk of acquiring T vaginalis infections is based on engagement in high-risk sexual activity. Those who engage in the following sexual practices are at a greater risk for infection:

  • New or multiple partners
  • Exchanging sex for money or drugs
  • Sexual contact with an infected partner
  • Not using barrier protection

Several other factors may indicate a higher likelihood of T vaginalis infection but may not be directly or causally linked, as follows:

  • A history of certain STIs
  • Current STIs
  • A history of injection drug use

Even if not directly causal, these factors may be predictive. In a study that considered risk factors for trichomoniasis, injection drug use in the preceding 30 days was the most strongly associated with infection and with new infection observed during the study. [25]


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