Analysis On Epideimiology And Space-Time Cluster Characteristics Of Hepatitis B In Nanchang City From 2006～2012

Object: To explore the epidemiology characteristics and spatial-temporal clusters of hepatitis B in Nanchang City from 2006 to 2012, and provide a theoretical basis for the hepatitis B prevention and control in the local.Methods: The data about the cases of hepatitis B and the demographic information of Nanchang City from 2006 to 2012 were downloaded from the China Information System for Disease Control and Prevention and the Nanchang Statical Yearbook respectively. The location coordinates information were acquired from the Google earth. Fristly, we described the epidemiological characteristics of hepatitis B and then analyze the Space-time clusters in Nanchang City during 2006 to 2012.Results: l.There were total 37826 cases of hepatitis B in Nanchang City from 2006~2012. The incidence rate of hepatitis B was decreased year by year during 2009~2012.T hehepatitis B w asnosum m itofpeakseason.2. The cumulative number of reported cases in Jinxian County, Xinjian County, Nanchang County, Qingshanhu District, Xihu District, Qingyunpu District, Donghu District, Anyi District and Wanli District was 10243,6312,6170, 4581,4470, 2317,2120,1202 and 411 respectively. The incidence rate of hepatitis B in Jinxian County and Donghu District was the highest and the lowest.3. M ost hepatitis B took place in young adults. The incidence rate of hepatitis B about the low age group was located in the low level. The proportion in male was higher than female(3.01:1). Farmer, worker and chores and unemployed were the high-risk groups of hepatitis B occurrence, occupied in 39.20%, 12.87% and 11.32% respectively.4. At the district level, the most likely cluster always appeared in Jinxian County. The other county was became the secondary clusters in individual annual such as Qingyunpu District, Donghu District Xinjian County and Xihu County. The high incidences of hepatitis B in Nanchang were more concentrated in the second quarter and third quarter. Fourth quarter time was not aggregation characteristics. Clusters were occupied in Towns more than the StreetsConclusion: l.During 2006~2012,the incidence rate of hepatitis B had no obvious seasonal peak of Nanchang City. M ost hepatitis B occurred in young adults and farmers. The incidence rate and trend of hepatitis B in each District and County were different.2. There were spatial, temporal and spatial-temporal clusters in the level of county andtow n/streetduring 2006~2012.3. It was feasible to explore the Space-Time cluster characteristics of hepatitis B in Nanchang City by the Sa TScan analysis, and it was useful for the hepatitis B prevention and control.