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目的分析肇庆市2009-2013年手足口病(HFMD)的季节性分布特征,为制定防控措施提供依据。方法利用HFMD监测数据,计算集中度和圆形分布,应用Rayleigh和Watson-William检验方法进行统计学分析。结果HFMD发病具有一定的季节性(M=0.471);发病高峰在7月上旬,流行期从4月下旬至9月中旬(r=0.468,平均角=180.831°,s=70.619°);采用Watson-William检验法比较2009-2013年各年的平均角,差异有统计学意义(F=774.322,P<0.01)。2009-2013年HFMD的流行持续时间分别为172、129、137、171、121 d。结论肇庆市HFMD流行季节性明显,应在流行期前提早落实各项防控措施,加强疾病监测,尽量减少重症病例和暴发疫情的发生。各年度流行高峰出现的时间不同,流行期的长短和起止时间稍有不同。
Objective To analyze the seasonal distribution of hand-foot-mouth disease (HFMD) in Zhaoqing from 2009 to 2013 and provide the basis for the development of prevention and control measures. Methods The HFMD monitoring data were used to calculate the concentration and circular distribution. The Rayleigh and Watson-William test methods were used for statistical analysis. Results The onset of HFMD was seasonal (M = 0.471). The onset peak was in early July and the prevalence was from late April to mid-September (r = 0.468, average angle = 180.831 °, s = 70.619 °) -William test compared the average annual 2009-2013 years, the difference was statistically significant (F = 774.322, P <0.01). The prevalence of HFMD in 2009-2013 was 172,129,137,171,121 d, respectively. Conclusions The seasonal epidemic of HFMD in Zhaoqing City is obvious. Various prevention and control measures should be implemented before the epidemic period so as to strengthen disease surveillance and minimize the occurrence of severe cases and outbreaks. The peak time of the annual epidemic is different, the duration of the epidemic is slightly different from the starting and ending time.