Totaling the number of bird flu cases to 20, three new human H7N9 cases were reported in China, the health authorities revealed.
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.