The collective flu outbreak which took place at three local schools were caused by the H1N1 Influenza Virus, according to the information released on Tuesday by the Disease Prevention and Control Centre (CDC) of Macao's Health Bureau.

The CDC said that there were no new flu cases reported in the three local schools, including two middle schools and a primary school, and all of the sick students have recovered and resumed having classes, which demonstrated that the epidemic has ceased to spread.

But to take better precautions against the flu outbreak, the CDC has required the above-mentioned schools to step up the cleaning and disinfecting of the classrooms and strictly implement the regulations that students suffering from illness take sick leave.

According to the CDC information, updated on a daily basis, there were no new collective flu cases reported in all local schools by Tuesday.

(Xinhua News Agency March 10, 2009)