Objective To investigate the prevalence of influenza A(H1N1)in schools in Guangzhou,and to provide the scientific basis for the control of outbreaks by analyzing the epidemiological characteristics and control illness measures.Methods A field survey of the outbreaks of the influenza A(H1N1) was conducted to test the specimens of throat swab.Results There were 196 outbreaks and 6 548 cases of influenza A(H1N1) were reported in schools in Guangzhou in 2009.The attack rate was between 0.02% to 36.51%.The outbr...