On Saturday 5 July young people in the town's pubs will have the chance to get tested for the sexually transmitted infection (STI), which affects one in ten sexually active people under the age of 25.   Brook Wigan & Leigh outreach team will carry out the screen tests, tell people how to get checked out for other STIs, give advice on how to avoid drink spiking and warn them of the dangers of unprotected sex.  Outreach worker Anne-Marie Yates said: "The number...