Analysis on epidemiological charateristics of viral hepatitis A in Sichuan Province from 2013 to 2022
Objective To analyze the epidemiological characteristics of viral hepatitis A(HAV)in Sichuan Province from 2013 to 2022,and to provide scientific basis for the prevention and control of hepatitis A in Sichuan Province.Methods The incidence data of hepatitis A in Sichuan Province from 2013 to 2022 were collected through the China Disease Control and Prevention Information System.Descriptive epidemiological method was used for analysis,x2 test,x2 trend test and variance analysis those methods were used to do the statistical test,the differences P＜0.05 was statistically significant.Results About 19 057 cases of hepatitis A were reported in Sichuan Province from 2013 to 2022,the annual reported incidence of hepatitis A was 2.32/105,it showed a downward trend,the incidence decreased by 76.74％.The overall reported incidence in western Sichuan was higher than that in other regions,the top five reported annual incidence were Ganzi Prefecture,Liangshan Prefecture,Aba Prefecture,Panzhihua City and Meishan City.Incidence occured throughout the year,with a significantly flattened peak in summer and autumn,with no significant seasonal characteristics in the past two years.The incidence rate of male was higher than that of female,the ratio of male to female was 1.51∶1,but the difference between male and female incidence rate was decreasing year by year.It occured in all age groups,the top three groups were 50-54 years old group,5-9 years old group and 75-79 years old group.The peak age of onset shifted from the low age group to the high age group.The main occupation of the disease was farmers,the proportion of 51.47％was much higher than that of other occupations,then followed by students and scattered children groups,accounted for 10.97％and 9.17％,respectively.Conclusions From 2013 to 2022,the reported incidence of hepatitis A in Sichuan Province showed an overall downward trend,the prevention and control measures focusing on hepatitis A vaccine vaccination have achieved significant results.We should strengthen the vaccination of hepatitis A for school-age children and key populations,we should increase health investment in key areas such as ethnic minorities and rural areas,and strengthen health education for the entire population,strengthen food safety risks and sanitary monitoring and supervision of drinking water,and do a good job in monitoring the epidemic of hepatitis A.
hepatitis Aepidemiological characteristicincidenceSichuan Province
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