If you've had trichomoniasis and it's been treated, you won't be immune to the infection and could get it again.
- use condoms (male or female) every time you have vaginal or anal sex
- if you have oral sex, cover the penis with a condom or the female genitals with a latex or polyurethane square (a dam)
- if you're a woman and rub your vulva against your female partner's vulva, one of you should cover your genitals with a dam
- avoid sharing sex toys – if you do share them, wash them or cover them with a new condom before anyone else uses them
If you're not sure how to use condoms correctly, you can read about how to use a condom.
If you've been diagnosed with trichomoniasis, make sure both you and your partner are treated, and that any sex toys you've used are cleaned.
If you're sexually active, go for regular sexual health check-ups. You can get an appointment by visiting your local genitourinary medicine (GUM) clinic.
If you notice any signs or symptoms of an STI, avoid having sex and visit your GP or GUM clinic as soon as possible.
Call the National Sexual Health Helpline on 0300 123 7123 for confidential advice and support 24 hours a day, 7 days a week.
Read more about where to get sexual health advice.