Hong Kong Hospital Authority announced Sunday that a 49-year-old male patient with a history of diabetes and obstructive sleep apnea syndrome died earlier after he was confirmed to have contracted the A/H1N1 flu, becoming the 53rd person in the city claimed by the epidemic, Xinhua reported. The patient was admitted to the United Christian Hospital on Dec. 22 with fever and other flu-like symptoms, since when he has been on ventilation support. He was prescribed with Tamiflu and antibiotics. The patient"s condition became critical and was transferred to the intensive care unit on Dec. 23. According to a spokesman of the hospital, the patient tested positive for the A/H1N1 flu on Dec. 24 and finally succumbed on Jan. 2.