Flu outbreaks at three schools in Guangdong province struck 22 students, prompting calls for tighter prevention and control measures at the community level.

There were 51 new cases of A(H1N1) flu on the Chinese mainland between 6 pm Saturday and 6 pm Sunday, bringing the total to 729, with no reports of deaths.

Of 30 new cases confirmed in Guangdong, nine were from Xi'nan Central Primary School in Foshan, six were from Trade Vocational School in Guangzhou and seven were from Shipai County Central Primary School in Dongguan.