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目的了解务川自治县甲型病毒性肝炎(甲肝)流行特征,为制定防治对策提供科学依据。方法采用描述性流行病学分析方法,比较分析人群在甲肝疫苗纳入国家免疫规划疫苗接种前后甲肝流行特征。结果甲肝疫苗纳入国家扩大免疫规划疫苗接种后,甲肝发病逐年降低,高年龄组发病比重增加,发病季节集中度降低,没有明显的季节性,以农民发病为多,其次是学生,发病以5~9岁年龄段为主。结论接种甲肝疫苗能有效降低甲肝发病率,保护广大人民群众的身体健康。
Objective To understand the epidemiological characteristics of hepatitis A virus in Wuchuan Autonomous County and provide a scientific basis for the development of control strategies. Methods Descriptive epidemiological analysis was used to compare the prevalence of hepatitis A before and after the hepatitis A vaccine was introduced into the national immunization program vaccination. Results After the hepatitis A vaccine was introduced into the national expanded immunization program, the incidence of hepatitis A decreased year by year, the incidence of hepatitis A increased, the season of onset decreased, there was no obvious seasonality, with more incidence of peasants, followed by students, 9-year-old age-based. Conclusion Hepatitis A vaccination can effectively reduce the incidence of hepatitis A and protect the general public’s health.