P502 ORACLE 502 Sun 5 May C4 2020:00   EXPERTS WORK ON  KILLER BUG THEORY Health experts are working on the theory that hospital air-conditioning could be responsible for the outbreak of Legionnaire's disease in Staffs. And hospital authorities have asked anyone who visited Stafford District General Hospital between April 22-May 3 to consult a doctor if they felt unwell A leading Government scientist has suggested that the killer bug may have its source in cooling towers at the hospital. Twenty-nine people have died in the outbreak. CURRY'S PRICE SCOOP.. see page 191