Hong Kong medical authorities have confirmed a third case of A/H1N1 flu in the city. The patient is a 23-year-old male student studying in the United States. He is a native of China's southern province of Guangdong. The student arrived in Hong Kong late Saturday, aboard Cathay Pacific flight CX-831.

He was taken straight to hospital from the airport, after he was found to have a fever when he passed thermal scanning.

Health officials say he was seated in row 60 during the flight. They are tracking down passengers on the same flight, who were seated in rows 57 to 60.

(CCTV May 19, 2009)