[Study on the estimation of routine immunization coverage of China, 2005-2007].
OBJECTIVE
This study is to estimate the routine immunization coverage of China, and to analyse the effect factors.


METHODS
The reported routine coverage data in 2005-2007 were collected through China Immunization information system. The estimated coverage method used in this study, which was recommended by the World Health Organization (WHO).


RESULTS
The percentage of county reported routine immunization were 79.8%, 92.3% and 92.0% respectively in 2005-2007; the targeted population of routine immunization reported from China immunization information system were 123-140.6 million, the vaccinated population were between 91.3-139.5 million; reported routine immunization coverage of each vaccine dose varied from 89%-100%, and estimated coverage varied from 78%-94%.


CONCLUSIONS
The reported and estimated routine immunization coverage increased year by year. However, there is still a large gap between the reported data and the estimated data. It is recognized that the birth cohort and the adjusted index from the WHO recommended method should be used carefully.
Wu
Wen-Di
WD
Department of National Immunization Program, Chinese Center for Disease Control and Prevention, Beijing 100050, China.
Liu
Da-Wei
DW
Cao
Lei
L
D002681:China; D006306:Health Surveys; D006801:Humans; D017589:Immunization Programs; D015397:Program Evaluation