The trichomonas parasite is passed from an infected person to an uninfected person during sexual intercourse.

In women, the most commonly infected part of the body is the lower genital tract (vulva, vagina, or urethra), and in men, the most commonly infected body part is the inside of the penis (urethra).

During sex, the parasite is usually transmitted from a penis to a vagina, or from a vagina to a penis, but it can also be passed from a vagina to another vagina. It is uncommon for the parasite to infect other body parts, like the hands, mouth, or anus.

Like many STIs, it is unclear why some people with the infection get symptoms while others do not, but this probably depends on factors like the person’s age and overall health. Infected people without symptoms can still pass the infection on to others.

Better2Know can test for Trichomonas at any of its clinics across the UK.

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