STIs caused by a bacterium
Some STIs are caused by a bacterium. They are easy to treat with antibiotics:
STIs caused by a virus
Other STIs are caused by a virus. They are much more difficult or impossible to treat. Often only the symptoms can be treated:
STIs caused by a parasite
Some STIs are caused by a parasite. These STIs are transmitted by sexual contact or only intimate skin contact.
Protection against STIs
A condom protects you and your partner against HIV, chlamydia and gonorrhoea. It reduces the risk of infection with other STIs. It does not always fully cover the sores, blisters or warts on your skin or your partner’s skin. This means that you still run a risk of infection with an STI. Vaccines can also protect against certain STIs. For instance: HPV.
How to recognise an STI
STIs often have no clear symptoms. You cannot always see whether you have an STI. Go to a doctor if you think you might have an STI. He/she can test you.