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目的探讨西安市手足口病流行的季节性特征,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西安市2010-2013年的手足口病月发病规律。结果西安市2010-2013年的手足口病季节性分布的总M值为0.534;手足口病发病平均高峰日为6月12日,流行高峰期为4月6日-8月19日。Rayleigh’test显示平均角存在(Z=21 670.92,P<0.001);M值与r值相关性显示M值和r值呈高度正相关(r=1.000,P<0.001)。结论西安市2010-2013年手足口病发病分布有较强的季节性分布特征,4-8月为该病的流行高峰,有关部门应在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 and mouth disease epidemic in Xi’an and provide a scientific basis for making prevention and cure strategies and measures. Methods The monthly incidence of hand-foot-mouth disease in 2010-2013 in Xi’an was analyzed by using concentration and circular distribution method. Results The total M value of seasonal distribution of HFMD in Xi’an from 2010 to 2013 was 0.534. The average peak incidence of HFMD on June 12 was from June 6 to August 19. Rayleigh’test showed that the average angle existed (Z = 21 670.92, P <0.001). The correlation between M and r showed a highly positive correlation between M and r (r = 1.000, P <0.001). Conclusion The distribution of HFMD in Xi’an from 2010 to 2013 has a strong seasonal distribution, and the peak is from April to August. Relevant departments should carry out targeted prevention and control measures during the peak period.