Three people were confirmed with Sars in Hong Kong yesterday, the lowest daily infection number since the outbreak began, as signs emerged of an easing on the mainland as well. The news came as government officials left for Geneva, hoping to lobby the World Health Organisation to lift its travel advisory on Hong Kong. The annual meeting of WHO's general assembly begins on Monday. A health-care worker at Prince of Wales Hospital was among the new cases yesterday, taking the total to 1,706. It was the 13th day in a row that Hong Kong's new infections were in single digits. The WHO has said the daily average must be below five cases for 20 straight days, and the number of patients in hospital must drop to 60 before the travel ban, imposed on April 2, can be lifted. Four patients died yesterday, taking the total to 238. The three men and one woman were aged 53 to 90, with two having chronic illnesses. Eleven people were discharged yesterday, bringing the total to 1,171. Of 232 remaining in hospital, 52 are in intensive care. Deputy Director of Health Leung Pak-yin said it was important for the government to show it was controlling the outbreak. He said Secretary for Health, Welfare and Food Yeoh Eng-kiong would push Hong Kong's case at the WHO meeting on Monday. On the mainland, only four people died and just 39 new cases were reported yesterday, bringing the national total to 5,191. This compared with 52 new cases on Thursday and 55 on Wednesday. In Beijing, 28 new cases were reported, but WHO officials said they were not convinced this was because the outbreak was coming under control. They said it might indicate authorities were ignoring patients with mild symptoms. 'People might be getting dismissed too early,' a WHO spokeswoman said.