Hong Kong confirms second human bird flu infection this winter

Hong Kong authorities on Friday (Dec 30) confirmed the city's second case of human bird flu infection this winter, five days after the death of a first patient who contracted the same H7N9 strain of the disease.

The Centre for Health Protection of the Department of Health said a 70-year-old man with underlying illnesses, who was admitted to hospital on Dec 27, was diagnosed with the H7N9 strain on Dec. 29 and was in stable condition.

The case comes as fears grow over the spread of bird flu - in varying strains - in neighbouring South Korea and Japan, as well as mainland China. At least two people have died from bird flu on the mainland and five have been infected so far this winter, the season when bird flu most frequently occurs.

Hong Kong officials said the source of infection was still under investigation. "Avian influenza is expected to increase in winter based on its seasonal pattern," a spokesman for the health protection centre said.

The unnamed patient, who was in contact with mobile stalls selling live poultry in the southern Chinese area of Zhongshan this month, returned to Hong Kong on Dec. 16, according to city officials. The man also bought a chilled chicken in Hong Kong's Kwun Tong district on Dec. 22.