STIs

'Chlamydia, gonorrhoea and syphilis are major public health problems.'
Syphilis cases have risen by 76% in the past four years.
'Our message is clear, have fun but do it safely.'
The average Brit has 'indirectly' had sex with 597,870 people.
It's thought oral sex is now the 'principal mode of transmission of drug-resistant gonorrhoea'.