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Analysis of the epidem iological characteristics of hepatitis A from 2005 to 2015 in Shenyang City |
SUN Ying-chun |
Immunization Planning Section,Shenyang Center for Disease Control and Prevention,Shenyang 110031,China |
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Abstract Objective To analyze the characteristics and trend of incidence of hepatitis A in Shenyang City,and provide scientific basis for health department to formulate measures for the controlling hepatitis A.M ethods Descriptive epidemiology was adopted for the analysis of incidence of hepatitis A from 2005 to 2015 in Shenyang City.Results Therewerea totalof1706 casesofhepatitisA reported from 2005 to2015 through InfectiousDiseasesReporting Information Management System.The average annual reported incidence(AARI)of hepatitis A was 2.01/100,000;a significantly upward trend of incidence of hepatitis A was seen after 2012.The AARIof hepatitis A was 2.51/100,000 inmale,while itwas 1.49/100,000 in female.The casesweremainly distributed in 20-55 age groups,accounted for 79.19%of the total cases;the AARI of hepatitis A was lower in 0-15 age groups than other groups.Among all cases,the proportion of the housework and unemployee was the highest(36.18%),followed by the official staff(15.65%);no case was found in the fisherman,childcare worker and nanny.There was an obvious season peak for the incidence of hepatitis A.Infections mainly occurred from March to July,accounted for 58.79%of the total cases;the incidence was less in October, November and December,respectively accounted for 3.75%,3.81%and 3.87%.The AARIs of hepatitis A in the urban districtwere the highest,followed by the suburbs and the lowest in the county.Conclusion The hepatitis A in Shenyang City was still serious,health education and vaccination should be given to the high risk areas and susceptible population.
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