Quick Answer
Trichomoniasis affects ~2 million Americans annually. It is the most common curable parasitic STI, treated with a single 2g dose of metronidazole or tinidazole. Most people have no symptoms.
- ~2 million estimated cases (CDC)
- Parasitic and curable
- Treatment: single 2g dose of metronidazole
- Asymptomatic in ~70% of women and ~90% of men
Context Most Pages Skip
Trichomoniasis is the most common non-viral STI in the U.S., yet it flies under the radar because it is so often asymptomatic.
Key Facts
Trichomoniasis increases HIV acquisition risk 2-3x. Treatment is a single dose, but partner treatment is essential to prevent reinfection.
⚕️ This page is educational and does not replace advice from a licensed clinician. If you may have been exposed to an STI, get tested — most infections are manageable, and many are fully curable.
Sources & Further Reading
- CDC — Sexually Transmitted Infections
- CDC STI Treatment Guidelines
- WHO — Sexually transmitted infections fact sheet
- MedlinePlus — Sexually Transmitted Diseases
Figures reflect CDC surveillance and WHO estimates; they are population statistics, not personal risk predictions.