If a person is having sex, the best protection against an STD is proper and consistent use of condoms.

  1. The surest way to avoid transmission of sexually transmitted diseases is to abstain from sexual contact, or to be in a long-term mutually monogamous relationship with a partner who has been tested and is known to be uninfected.
  2. Latex male condoms, when used consistently and correctly, can reduce the risk of transmission of trichomoniasis.