Trichomoniasis (Trichomonas vaginalis)

Clinical description
Many cases are asymptomatic. For those with symptoms, trichomonas vaginalis is characterised in women by vaginitis, vaginal discharge, vulval itching, dysuria, offensive odour, urethritis or cystitis. In men symptoms include urethral discharge and/or dysuria, urethral irritation and urinary frequency.

Laboratory criteria

Detection of T. vaginalis nucleic acid target in specimens from clinically appropriate sites using a validated method.


Detection of the parasites in discharges or clinically appropriate specimens either by microscopic examination or by culture

Epidemiological criteria

Case classification
A. Possible case
B. Probable case
C. Confirmed case
Any person meeting the laboratory criteria 

Current as of: 2 January 2024