A charity has warned that football supporters risk picking up sexually transmitted infections during the World Cup if they drink too much alcohol.
The Terrence Higgins Trust found in a poll that about 10% of 18 to 34-year-old fans drink so much while watching a game that they do not know what they are doing afterwards.
Fans travelling to South Africa for the tournament have been advised to take condoms as the country has the biggest rate of HIV and Aids in the world.
The "Scoring without getting an own goal" guide produced by the charity contains advice for any fans who take part in "post-match action".
Charity spokeswoman Genevieve Edwards said: "If people are getting so drunk they can't remember what they did the night before, it's more than likely protected sex and condoms won't have been top of their priority list.
"This is really worrying in relation to the World Cup this year, with thousands of people gathering in both the UK and South Africa to watch the tournament enjoying a holiday atmosphere, having a lot to drink and potentially putting themselves at huge risk of sexually-transmitted infections and HIV if they are forgetting about protected sex."
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