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目的探讨河南省手足口病(hand-foot-mouth disease,HFMD)流行的季节性特征,为制定防治策略和措施提供科学依据。方法应用集中度及圆形分布法分析河南省2010年的手足口病月发病规律。结果河南省2010年的手足口病季节性分布的M值为0.518;平均角为所对应的日期即手足口病发病高峰日为4月13日,经平均角的Rayleigh’test,Z=32344.343,P<0.001,发病高峰日的95%可信区间为4月12日-4月13日;发病的流行高峰期为2月13日-6月12日。结论 2010河南省手足口病发病有较强的季节性分布特征,2-6月为该病的流行高峰,应在此流行高峰期内开展有针对性的防控措施。
Objective To explore the seasonal characteristics of hand-foot-mouth disease (HFMD) prevalence in Henan Province, and to provide a scientific basis for making prevention and treatment strategies and measures. Methods The concentration and circular distribution method was applied to analyze the monthly incidence of hand-foot-mouth disease in Henan Province in 2010. Results The seasonal distribution of hand-foot-mouth disease in Henan Province in 2010 was 0.518. The average angle was the corresponding date, that is, the peak day of hand-foot-mouth disease was April 13. The average angle of Rayleigh’s test, Z = 32344.343, P <0.001. The 95% confidence interval for the peak incidence was April 12-April 13; the peak incidence of the disease was February 13-June 12. Conclusion The occurrence of HFMD in Henan Province in 2010 is characterized by a strong seasonal distribution. It is the epidemic peak in 2-6 months. Precautionary measures should be taken during the peak period of this epidemic.