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目的探讨广州市2009年学校甲型H1N1流感暴发疫情流行特征及采取的防制措施,为控制其暴发提供科学依据。方法对广州市2009年发生并经实验室确诊的甲型H1N1流感暴发疫情的现场调查资料进行统计分析。结果 2009年广州市共报告学校甲型H1N1流感暴发疫情196起,其中小学114起,占疫情总数的58.16%。累计报告流感样病例6 548人,涉及305 977人,罹患率介于0.02%～36.51%。9-11月为发病高峰,共报告175起,占全年疫情的89.29%。首发病例到报告的时间与罹患率相关系数为0.268。结论 2009年广州市学校甲型H1N1流感活跃程度高,中小学校为疫情的高发场所,应加强监控。
Objective To explore the epidemic characteristics of H1N1 outbreak in schools in Guangzhou in 2009 and the preventive measures to be taken to provide a scientific basis for controlling the outbreak. Methods The field survey data of outbreaks of influenza A (H1N1) in 2009 in Guangzhou were collected and analyzed. Results In 2009, a total of 196 cases of H1N1 influenza outbreaks were reported in Guangzhou, 114 of them primary schools, accounting for 58.16% of the total. A total of 6 548 flu-like cases were reported, involving 305,977 people with attack rates ranging from 0.02% to 36.51%. The peak incidence from September to November, a total of 175 reported, accounting for 89.29% of the annual outbreak. The correlation coefficient between the first case and the reported time and the attack rate was 0.268. Conclusion In 2009, the influenza A (H1N1) in schools in Guangzhou City was highly active. Primary and secondary schools were the high incidence sites for outbreaks and should be closely monitored.