Analysis on the proportion of reported hepatitis B cases through pilot surveillance in China during 2006.
- Author:
Fu-Qiang CUI
1
;
Yong LU
;
Fu-Zhen WANG
;
Yuan-Sheng CHEN
;
Hui ZHENG
;
Yong ZHANG
;
Xiao-Hong GONG
;
Li-Li HAN
;
Hong-Jun DONG
;
Chao CHEN
;
Luo-Ya LING
;
Li ZHANG
;
Lin-Qi DIAO
;
Xiao-Ping SHAO
;
Gang FANG
;
Li GAO
;
Xiao-Feng LIANG
Author Information
- Publication Type:Journal Article
- MeSH: China; epidemiology; Hepatitis B; diagnosis; epidemiology; Hepatitis B Antibodies; blood; Humans; Incidence; Pilot Projects; Population Surveillance
- From: Chinese Journal of Epidemiology 2007;28(9):872-874
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo better understand the proportions of reported hepatitis B cases in pilot surveillance cites through investigation and laboratory testing.
METHODSTo confirm the reported cases of hepatitis B by collecting blood specimen and laboratory testing on HBsAg, IgM of Anti-HBc, Anti-HAV in 18 pilot surveillance counties.
RESULTSAmong 2858 cases of hepatitis B reported in 2006, 23.97% of them were reported as suspected acute cases, 14.87% as acute cases, 20.33% as suspected chronic cases, 34.67% as chronic cases, 4.09% as cirrhosis and 2.06% as HCC. Among 1681 reported hepatitis B cases confirmed by laboratory testing, results showed that 24.16% of them were diagnosed as acute hepatitis B, but only 15.37% were confirmed as acute hepatitis B. Although the proportion confirmed as hepatitis B kept consistent as before, misclassification was found.
CONCLUSIONIn current surveillance system, reported hepatitis B cases were mainly chronic, only up to one third belonged to acute hepatitis B. The reported incidence of hepatitis B did not reflect the real incidence due to misclassification. To better define the burden on hepatitis B disease, it was necessary and urgent to revise the diagnostic criteria and to conduct surveillance on hepatitis B, under separate reporting categories which including acute and chronic cases of the disease.
