[Study on the health status and affecting factors among people living in the surveillance sites of three Gorges Reservoir Areas, in 2007].
OBJECTIVE
To understand the health status and potential impact resulted in the second stage of Three Gorges Reservoir Areas sluicing.


METHODS
Data were collected on deaths, prevalence rates of infectious and endemic diseases, as well as on vector surveillance through the project entitled 'Three Gorges Population Health Survey System'.


RESULTS
The main causes of death in the population living in the Three Gorges Reservoir Areas would include: circulatory system diseases, tumors, respiratory system diseases, injuries/poison and digestive system diseases. The number of deaths caused by the above said five kind of diseases accounted for 90.94% of the total number of deaths. The prevalence rates on Water-born diseases related to the sluicing of reservoir and zoonosis-borne diseases related to the changes of vectors were still low. The indoor and outdoor densities of rodents were 3.11% and 3.16%, both were higher than that in 2006 but lower than the average numbers in the five years prior to the sluicing. The constituent ratio of Apodemus agrarius had constantly risen since 2006. The density of mosquitoes found in livestock barns and human households was higher than that in 2006 but lower than the average number of the five-year studies prior to the sluicing.


CONCLUSIONS
Environment change after the sluicing of the Three Gorges Reservoir Areas did not seem to have obvious impact on the health status of the people living in the areas. However, to strengthen the surveillance on the biological features of the vectors which might have related to the transmission of diseases would be highly recommended.
Chang
Zhao-Rui
ZR
Chinese Center for Disease Control and Prevention, Beijing 100050, China.
Zhang
Jing
J
Li
Pei-Long
PL
Wang
Cheng-Xin
CX
Mao
De-Qiang
DQ
He
Yuan-Yuan
YY
Yan
Chao-Yang
CY
Jiang
Bin
B
Wang
Zi-Jun
ZJ
Yang
Wei-Zhong
WZ
D000818:Animals; D002423:Cause of Death; D002681:China / Q000453:epidemiology; D003140:Communicable Disease Control; D019353:Endemic Diseases / Q000517:prevention & control; D004784:Environmental Monitoring / Q000379:methods / Q000706:statistics & numerical data; D062665:Epidemiological Monitoring; D005260:Female; D006304:Health Status; D006801:Humans; D008297:Male; D011159:Population Surveillance; D012959:Socioeconomic Factors