Sexually Transmitted Infections (STIs)

Casual sexual encounters may occur while travelling and can increase the risk of sexually transmitted infections (STIs). The risk depends on factors such as sexual behaviour, number of sexual partners and condom use.

Common sexually transmitted infections include chlamydia, gonorrhoea, genital warts (HPV), herpes, syphilis and HIV. Many STIs can cause few or no symptoms, so an infection may go unnoticed.

Common Sexually Transmitted Infections

  • Chlamydia – may cause pain or burning when urinating and genital discharge, but often causes no symptoms.
  • Gonorrhoea – may cause genital discharge and pain or burning when urinating, but can also be symptom-free and may lead to serious complications if untreated.
  • Genital warts (HPV) – certain types of human papillomavirus (HPV) can cause genital warts.
  • Herpes – may cause painful blisters or sores on or around the genitals.
  • Syphilis – may cause sores, skin rashes and other symptoms, but can also remain symptom-free for long periods.
  • HIV – is also a sexually transmitted infection, but differs from many other STIs in that the virus attacks the body's immune system. Read more about HIV →

How to Reduce the Risk

  • Use condoms during casual sexual encounters.
  • Consider bringing condoms with you if you are uncertain about their availability or quality at your destination.
  • Avoid sexual contact if you or your partner have symptoms that could indicate an infection.
  • Remember that condoms considerably reduce the risk of many STIs but do not provide complete protection against all infections.

Think You May Have an STI?

If you think you may have contracted a sexually transmitted infection, seek medical advice for appropriate testing and assessment. Remember that many STIs can be present without causing symptoms.

Do not attempt to treat yourself with over-the-counter medicines or antibiotics obtained while travelling. Inappropriate treatment can make diagnosis more difficult and contribute to antibiotic resistance.

If an STI is suspected or diagnosed, recent sexual partners may also need to be informed, tested and, where appropriate, treated.


Senast uppdaterad 2026-09-02