Epidemiological Characteristics Analysis of 226 Cases with Influenza A(H1N1) Infection in Suzhou Old Quarters

OBJECTIVE To study the epidemiological characteristics of cases with influenza A(H1N1) infection in Suzhou Old Quarters, and to provide the scientific evidence for control and prevention of influenza A(H1N1). METHODS According to the National disease monitoring information network straight quote system information, the epidemiological characteristics of 226 cases with influenza A (H1N1) reported in Suzhou Old Quarters in 2009 were descriptively analyzed. RESULTS Of all the cases with influenza A(H1N1) in Suzhou Old Quarters, male cases accounted for 51.8% and female one accounted for 48.2%; 64.6% of the cases concentrated in the age range of 0 to 29 years; The occupational proportion showed that the majority of the cases were students, which accounted for 34.1% of the total; The peak of influenza A(H1N1) appeared in early September and 11 months late; The incidence of influenza A(H1N1) is higher in populated areas. CONCLUSIONS The students were the risk population for influenza A (H1N1). Prevention and control of influenza A(H1N1)should be focused on schools; Pandemic Influenza of floating population can not be ignored.