Epidemiology of schistosomiasis in the People's Republic of China, 2004.
Results from the third nationwide cluster sampling survey on the epidemiology of schistosomiasis in the People's Republic of China, conducted by the Ministry of Health in 2004, are presented. A stratified cluster random sampling technique was used, and 239 villages were selected in 7 provinces where Schistosoma japonicum remains endemic. A total of 250,987 residents 6-65 years of age were included in the survey. Estimated prevalence rates in the provinces of Hunan, Hubei, Jiangxi, Anhui, Yunnan, Sichuan, and Jiangsu were 4.2%, 3.8%, 3.1%, 2.2%, 1.7%, 0.9%, and 0.3%, respectively. The highest prevalence rates were in the lake and marshland region (3.8%) and the lowest rates were in the plain region with waterway networks (0.06%). Extrapolation to all residents in schistosome-endemic areas indicated 726,112 infections. This indicates a reduction of 16.1% compared with a nationwide survey conducted in 1995. However, human infection rates increased by 3.9% in settings where transmission is ongoing.
Zhou
Xiao-Nong
XN
National Institute of Parasitic Diseases, Shanghai, People's Republic of China. ipdzhouxn@sh163.net
Guo
Jia-Gang
JG
Wu
Xiao-Hua
XH
Jiang
Qing-Wu
QW
Zheng
Jiang
J
Dang
Hui
H
Wang
Xian-Hong
XH
Xu
Jing
J
Zhu
Hong-Qing
HQ
Wu
Guan-Ling
GL
Li
Yue-Sheng
YS
Xu
Xing-Jian
XJ
Chen
Hong-Gen
HG
Wang
Tian-Ping
TP
Zhu
Yin-Chang
YC
Qiu
Dong-Chuan
DC
Dong
Xing-Qi
XQ
Zhao
Gen-Ming
GM
Zhang
Shao-Ji
SJ
Zhao
Nai-Qing
NQ
Xia
Gang
G
Wang
Li-Ying
LY
Zhang
Shi-Qing
SQ
Lin
Dan-Dan
DD
Chen
Ming-Gang
MG
Hao
Yang
Y
D000293:Adolescent; D000328:Adult; D000368:Aged; D000818:Animals; D002648:Child; D002681:China / Q000453:epidemiology; D016000:Cluster Analysis; D019353:Endemic Diseases / Q000517:prevention & control / Q000706:statistics & numerical data*; D006801:Humans; D008875:Middle Aged; D015995:Prevalence; D012494:Sampling Studies; D012554:Schistosomiasis japonica / Q000453:epidemiology*