Three new human H7N9 cases were reported Saturday in China's Zhejiang province, bringing the total number of cases in this province to 20, health authorities said.
The new cases included a 35-year-old man surnamed Xiao from Ningbo City, who is in critical condition and being treated in hospital, Xinhua quoted a statement from the provincial health and family planning commission.
Another two patients are a 72-year-old woman from Hangzhou city and a man, aged 69, from Shaoxing city. They are also in critical condition, said the statement.
H7N9 avian flu cases have also been reported this year in Jiangsu and Guangdong provinces and Shanghai municipality.