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目的了解内江市乙型病毒性肝炎(乙肝)流行病学特征,为控制乙肝提供科学依据。方法采用描述流行病学方法,对2009-2015年内江市报告的乙肝病例进行分析。结果内江市共报告乙肝病例17 277例,报告发病率范围为39.52/10万~84.34/10万,年均发病率为63.85/10万,其中2009-2015年乙肝发病率分别是:76.52/10万、79.02/10万、84.34/10万、71.13/10万、51.76/10万、39.52/10万和41.36/10万,呈总体下降趋势,差异有统计学意义(P<0.05);发病无明显的季节高峰;病例主要分布在20~60岁占报告病例的88.45%;男女报告发病率具有统计学意义(P<0.05),可以认为男性报告发病率高于女性。全市报告病例中,农民占63.34%;实验室诊断病例、临床诊断病例分别占89.28%、10.72%;急性乙肝病例、慢性乙肝病例、未分类乙肝病例分别占5.43%、87.34%和7.24%。结论 2009-2015年内江市乙肝发病呈总体下降趋势,病例以男性、农民和青壮年为主。
Objective To understand the epidemiological characteristics of hepatitis B in Neijiang and to provide a scientific basis for the control of hepatitis B. Methods Descriptive epidemiological methods were used to analyze hepatitis B cases reported in Neijiang from 2009 to 2015. Results A total of 17 277 cases of hepatitis B were reported in Neijiang City. The reported incidence ranged from 39.52 / 100 000 to 84.34 / 100 000 with an average annual incidence of 63.85 / 100 000. Among them, the incidence of hepatitis B in 2009-2015 was 76.52 / 10 (P <0.05). The incidence was no significant difference between the two groups (P <0.05). The average incidence was 79.02 / 100000, 84.34 / 100000, 71.13 / 100000, 51.76 / 100000, 39.52 / 100000 and 41.36 / Obvious peak season; cases were mainly distributed in 20 to 60 years old accounted for 88.45% of the reported cases; male and female reported incidence was statistically significant (P <0.05), men can be considered higher incidence of reports than women. Among the reported cases in the city, peasants accounted for 63.34%; laboratory diagnosed cases and clinical diagnosed cases accounted for 89.28% and 10.72% respectively; cases of acute hepatitis B, chronic hepatitis B and non-classified hepatitis B accounted for 5.43%, 87.34% and 7.24% respectively. Conclusion The overall incidence of hepatitis B in Neijiang from 2009 to 2015 shows an overall decreasing trend. The main cases are male, peasant and young adults.