Trichomoniasis is transmitted primarily through vaginal sexual intercourse without a condom; so the best way to prevent it is to practise safe sex.

If someone has had it once, received treatment for TV and successfully got rid of the infection, this doesn’t mean that they can’t get it again.

In this post, we’ll look at the different ways to lower the risk of getting the infection, including:

Use barrier contraception

This works by stopping sperm and vaginal fluid, which can harbor the TV parasite, from passing between partners. Examples include male condoms, female condoms and dental dams.

Although it is not a 100 percent guarantee, barrier contraception significantly reduces the risk of STI transmission when it is applied correctly. If you’re using barrier contraception, it’s important to follow the instructions and apply it properly before use, to maximise the chances of it being effective.

Condoms and other forms of barrier contraception can sometimes be obtained for free from sexual health clinics. Otherwise, they are widely available in pharmacies, supermarkets and shops.

Clean sex toys

Ideally, it’s better not to share sex toys to minimise the risk of passing on a TV (or any other sexually transmitted) infection. But if you do, there are some measures you can take to make sure this risk stays low.

One is to clean sex toys between uses, to help wash of any residual vaginal fluid and prevent any potential infections being spread.

Another is to cover the sex toy with a condom, and then replace this after each use. This help to remove any vaginal fluid, and again reduce the risk of STI transmission.

Not having sex

Perhaps the best way to completely eliminate the risk of contracting or passing on a TV infection is to refrain from having vaginal sex altogether, if you’re unsure of yours or your partner’s STI status, and barrier contraception is not available.

Get tested for STIs regularly

If you’re sexually active, having regular STI tests can reduce the risk of you passing on the infection to someone else; and if your partner does the same, this can help to prevent them from passing on an infection to you.

For people who are not in a monogamous relationship and sexually active, it’s advisable to get tested for TV and other STIs around once a year; or whenever you have had unprotected sex with someone whose STI status you don’t know.

Page last reviewed:  07/10/2020 | Next review due:  10/10/2022