The advertising will be part of a wider 拢300m push by the Department of Health to cut the number of STIs, particularly among 18- to 25-year-olds.
COI Communications recently reviewed the account, retaining Delaney Lund Knox Warren after a pitch that also included Rainey Kelly Campbell Roalfe/Y&R.
DLKW's most recent work on the account was a press campaign that used saucy seaside postcard-style humour to raise awareness of the risks of having unprotected sex.
Figures show that there have been rises in the number of sexual infections, including an 9% rise in chlamydia, a 2% rise in genital warts and a jump of 28% in the rate of syphilis infection.
STIs that go undiagnosed can lead to infertility and the Department of Health is to launch free screening for young people at easily accessible locations such as supermarkets.
The Department of Health said that prevention messages was not getting through.
"We will run an advertising campaign that tells people, especially young people, of the consequences of irresponsible sexual behaviour and of sexually transmitted diseases," a spokesman said.
The advertising campaign is expected to emphasise the risks of STIs and the importance of practising safe sex. It is due to appear early next year, and is understood to use television, radio, posters and the internet.
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