It's claimed children as young as 11 are being forced into prostitution in Brazil by groups hoping to make money from football fans at this summer's World Cup.
In Britain a campaign has been launched to remind supporters that they risk prosecution if they pay to have sex with minors - even if they believe them to be old enough.
It's supported by football stars like Gary Linekar.
Jesse Hall is a missionary who tries to get vulnerable youngsters into care homes:
Meanwhile in Ireland, sixty-eight groups involved in the 'Turn Off the Red Light' campaign will be lobbying politicians today to make it illegal to buy sex.
The groups' aim is to end prostitution and sex trafficking in Ireland.
The Immigrant Council of Ireland says it's vital to keep up the pressure on politicians.
Last summer the Oireachtas Justice Commitee recommended introducing laws to criminalise the purchase of sex.
