Can Trichomoniasis (Trich) be non-sexually transmitted?

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Last updated: May 30, 2025View editorial policy

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From the Guidelines

Yes, trichomoniasis (trich) can be transmitted non-sexually, although sexual transmission is the most common route. Non-sexual transmission can occur through sharing moist objects like wet towels, bathing suits, or toilet seats, though this is relatively rare [ 1 ]. The parasite Trichomonas vaginalis can survive for several hours in a moist environment. Trichomoniasis can also be passed from mother to baby during childbirth, though this is uncommon.

Key Points to Consider

  • The standard treatment for trichomoniasis is a single dose of metronidazole (2 grams) or tinidazole (2 grams), or metronidazole 500 mg twice daily for 7 days [ 1 ].
  • All sexual partners should be treated simultaneously to prevent reinfection, and you should avoid sexual activity until treatment is complete and symptoms resolve.
  • Even with non-sexual transmission, it's essential to complete the full course of antibiotics to effectively eliminate the infection.
  • Metronidazole gel is not recommended for the treatment of trichomoniasis due to its low efficacy [ 1 ].

Important Considerations

  • Pregnant women with trichomoniasis should be treated to relieve symptoms and prevent potential complications such as premature rupture of the membrane, preterm delivery, and low birth weight [ 1 ].
  • Patients with trichomoniasis and HIV infection should receive the same therapy as those without HIV infection [ 1 ].

From the Research

Transmission of Trichomoniasis

  • Trichomoniasis is primarily transmitted through sexual intercourse, as stated in the study 2.
  • Transmission via fomites is rare, according to the same study 2.
  • There is no evidence to suggest that trichomoniasis can be transmitted non-sexually, as the studies focus on sexual transmission 2, 3, 4.

Non-Sexual Transmission

  • None of the provided studies suggest a non-sexual mode of transmission for trichomoniasis.
  • The studies emphasize the importance of sexual transmission in the spread of the disease 2, 3, 4.

Conclusion on Non-Sexual Transmission

  • Based on the available evidence, it appears that trichomoniasis is primarily a sexually transmitted disease, with no clear evidence of non-sexual transmission 2, 3, 4.

References

Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 2025

Research

Trichomoniasis.

Clinical microbiology reviews, 2004

Research

Prevention or treatment: the benefits of Trichomonas vaginalis vaccine.

Journal of infection and public health, 2010

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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