A sexually transmitted infection (STI) is most commonly transmitted through unprotected sex with an infected partner.
This can be vaginal, anal or oral sex. Some STIs can be passed on from one partner to another through skin-to-skin contact.
Chlamydia is the most commonly notified STI in Western Australia. The number of chlamydia notifications in WA increased by 16% in the first quarter of 2006 compared with the same period in 2005, from 1294 to 1496 cases.
You could be at risk of having an STI if you:
If you are at risk it is important to get tested.
Most people do not experience any symptoms. However, if you do have symptoms they may include:
Some STIs such as HIV and Hepatitis B can initially seem like a 'flu-like' illness. Do not wait for these symptoms to go away – the infection could still be in your body and cause health problems in the future.
These are not always classified as STIs but can be transmitted through sexual activity.
Sexual Health Services provides further information on STIs and sexual health issues, including pdf documents you can download and print.