The World Health Organization (WHO) has updated its fact sheet on sexually transmitted infections (STIs).
More than 30 different bacteria, viruses and parasites are known to be transmitted through sexual contact. Eight of these pathogens are linked to the greatest incidence of sexually transmitted disease. Of these 8 infections, 4 arecurrently curable:
- chlamydia and
The other 4 are viral infections and are incurable:
- hepatitis B,
- herpes simplex virus (HSV or herpes),
- HIV, and
- human papillomavirus (HPV).
STIs are spread predominantly by sexual contact, including vaginal, anal and oral sex. Some STIs can also be spread through non-sexual means such as via blood or blood products. Many STIs—including chlamydia, gonorrhoea, primarily hepatitis B, HIV, and syphilis—can also be transmitted from mother to child during pregnancy and childbirth.
A person can have an STI without having obvious symptoms of disease. Common symptoms of STIs…
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