Epidemiological analysis of an outbreak of influenza in a primary school of Huiyang District,Huizhou City

Objective To understand the epidemiological features of influenza outbreak in an elementary school and provide scientific evidence for monitoring and adopting effective control measures. Methods Epidemiological survey was conducted the patients were diagnosed based on the National Standard(GB15994-1995) and the epidemiological features of the outbreak of influenza in this elementary school was analyzed. Results Out of the 314 students in the school 112 pupils were infected with influenza,with an infection rate of 35.67%.The incidents occurred mostly in the period of from May 13to May 17.The infection rate is in preschool children was as high as 85.71%. Conclusion The outbreak of influenza in this primary school was effectively controlled after effective measures were taken.