- Intestinal infection with flagellated protozoan parasite.
- Transmission is via the faecal-oral route. Personal hygiene is key to prevention.
- Symptoms vary from asymptomatic passage of cysts to acute self-limiting diarrhoea or chronic diarrhoea. Growth retardation in children has been well described.
- Diagnosis is by detection of cysts or trophozoites in a stool sample.
- Metronidazole or tinidazole is recommended as first-line treatment.
Last updated: May 10, 2013