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目的研究连云港市甲型肝炎(简称甲肝)12年间的流行特征,为今后全市的甲肝防制工作的开展提供参考。方法对连云港市1997—2008年传染病疫情系统上报的甲肝疫情资料进行流行病学分析。结果连云港12年间甲肝发病率呈整体下降趋势(χ2=1559.35,P=0.00),有春秋2季发病高峰,但大多数年份高峰不明显,灌云县发病率最高,农民长期在50%以上,15岁以下儿童发病水平逐年下降至7%以下,而成人发病比重上升,男女性别比2.55∶1。结论该市甲肝发病率虽呈下降趋势,但在经济落后的农村地区推广疫苗接种仍是连云港市今后甲肝防治工作的重点措施。
Objective To study the epidemiological characteristics of hepatitis A in Lianyungang for 12 years and provide reference for the prevention and control of hepatitis A in the future. Methods Epidemiological data of hepatitis A virus reported in epidemic situation of infectious diseases in Lianyungang from 1997 to 2008 were analyzed. Results The incidence of hepatitis A in Lianyungang showed an overall decreasing trend in 12 years (χ2 = 1559.35, P = 0.00), with the highest incidence in the second quarter of spring and autumn, but the peak was not obvious in most years, with the highest incidence in Guanyun County and the long-term peasants being over 50% The incidence of children under 15 years of age dropped year by year to below 7%, while the proportion of adult cases increased, male to female ratio of 2.55: 1. Conclusions Although the incidence of hepatitis A in this city has been declining, the popularization of vaccination in economically underdeveloped rural areas is still the key measure for future prevention and control of hepatitis A in Lianyungang.