舟山地区2008-2011年手足口病流行趋势及病原分析

目的 了解舟山市手足口病疫情流行特征,为制定防控措施提供参考依据.方法 采用描述流行病学方法对2008—2011年报告的手足口病病例进行分析.结果 2008—2011年舟山市共报告手足口病1831例,重症病例7例,无死亡病例,呈散发状态,未发生暴发疫情,年均发病率为41.10/10万.定海区年均发病率最高(52.11/10万),岱山县最低(26.26/10万).男性发病高于女性,以散居儿童和幼托儿童为主,集中于0～5岁儿童,占96.18％.发病高峰一般在4～8月,2008年和2009年有2个发病高峰,2010年和2011仅有一个发病高峰.病原学监测结果显示以EV71和其他肠道病毒为主,7例重症病例中,均检测EV71型阳性.结论 舟山海岛地区手足口病发生有明显的年龄、性别、职业和季节差异,流行毒株以EV71和其他肠道病毒为主,重症病例流行毒株以EV71为主.

Epidemiological and etiolog characteristics of hand, foot and mouth disease in Zhoushan, 2008-2011

Objective To analyze the epidemiological characteristics of hand, foot and mouth disease（HFMD） in Zhoushan and provide scientific evidence for the prevention and control of the disease. Methods Descriptive epidemiological analysis was conducted on the incidence data of HYMD reported from 2008 to 2011. Results A total of 1831 HFMD cases with 7 severe cases and no dead cases were reported during this period. The average annual incidence was 41.10/100 000. The highest average annual incidence rate was reported in Dinghai district（52.11/100 000） and lowest in Daishan district（26.26/100 000）. The case number in males was obviously higher than that in females. Children aged 0-5 years were in high risk. the cases among them accounted for 96.18% of the total. Tne incidence peak occurred between April and August, and two incidence peaks occurred in 2008 and 2009, and one incidence peaks occurred in 2010 and 2011. Etiological surveillance indicated that HFMD cases were mainly caused by EV71 and other intestinal virus infection. Seven severe cases were mainly caused by EVT1. Condusions The incidence of HTMD varies by age, sex, population and season in Zhoushan islands municipality. The epidemic isolates are EV71 and other intestinal virus. The prevalent strain of severe cases is EV71.