Number of human infections likely to increase as weather grows colder, say health authorities

New cases of human infections of the H7N9 virus have been reported daily across the country as winter continues.

On Friday, three cases were confirmed in Guangdong and one case was confirmd in Hunan. The cases in Guangdong are aged from 48 to 62, while the one in Hunan is a 21-year-old woman.