This study is designed to try to find the best method of partner notification and treatment for partners of women with trichomonas

To carry out a randomized trial to compare the effectiveness of three methods of partner notification and treatment for sexual partners of women with vaginal trichomoniasis - patient self-referral of partners (the current practice standard), delivery of curative therapy to partners by patients themselves, or public health style Disease Intervention carried out by a specially trained Disease Intervention Specialists (DIS) locating the partners and delivering the medication in the field. Reinfection rates with trichomonas at three months of follow-up among the index women will be the measure of effectiveness.

Inclusion Criteria:

Inclusion criteria {for Women}:

Age {> 15 years} Culture or wet prep proven T. vaginalis infection Willingness to provide informed consent and take part in study procedures

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Exclusion Criteria:

• Exclusion criteria:

Infection with other STD pathogens requiring Health Dept DIS intervention (syphilis or HIV) Pregnancy or currently breast feeding Recent (8 hours) ingestion of alcoholic beverages or intent to do so in the 24 hours following treatment Allergy to metronidazole The presence of a sexual partner in the clinic at the time of enrollment A history of referral by a partner already treated for trichomoniasis Report of more than four sexual partners in the preceding 30 days