Three more people were confirmed to be infected with H7N9 bird flu in two Chinese provinces, including one who died, health authorities said Sunday.

Infection of a woman, 81, from Shenzhen in south China's Guangdong Province, who died on Friday, was confirmed on Saturday, according to the provincial health and family planning commission.

An 11-year-old boy from Huaiji County, also in Guangdong, was confirmed with the virus on Saturday. He is in a stable condition, according to the commission.

A man, 66, from Susong County, Anhui Province, suffered an upper respiratory tract infection earlier this month and was confirmed as infected with bird flu on Saturday. He is in a critical condition.

His wife has engaged in live poultry trading.

Live poultry markets in Susong County and the urban area of Anqing City, which governs Susong, were suspended on Sunday.

China has reported more than 120 human H7N9 cases this year, including over 26 deaths, with provinces of Zhejiang and Guangdong worst affected.