One in 10 men and half of women experience no symptoms.
US health officials are looking into it right now.
It's said to be more common than gonorrhoea. These are the symptoms to look out for.
A new calculator lets you search how many STIs there are in your (ahem) local area.
These are the most common anal health issues – don't keep schtum about your bum.
Unregulated condoms can put you at risk of unwanted pregnancy and STIs.
Some local London boroughs are running out of tests online by 7.15am.
"Society’s view is that disabled people don’t, won’t and can’t have sex."
So do whatever you please to your pubic hair.
Behind the scenes with three sexual health workers – and why their job "isn't just curing genital warts".