Analysis on the Incidence of Measles before and after Supplementary Immunization Activities with Measles-containing Vaccine in China

Objective To learn the supplementary immunization activities(SIAs)effect of measlescontaining vaccine(MCV)in China(excluding Hong Kong and Macao Special Administrative Region, and Taiwan Sheng) from 2004 to 2011, to provide reference for future SIAs. Method Descri pt ive statistical analysis the data of supplementary information and cases of measles in China during 2004-2011. Result SIAs effect of measles vaccine is obvious, but there is significant differences by provinces. The provinces which was the first time implemented SIA, the incidence of measles decreased from 73.38%-99.54%, median was 96.14%(P25 =90.78%,P75 =97.97%),the second time implementation of SIAs, the incidence of measles dropped from 16.67%- 99.89%, median was 86.21%(P25 =67.95%,P75 =96.00%), the third time implementation of SIAs, the incidence of measles decreased 91.89%, but in some provinces, the incidence of measles has increased. After SIAs, the low incidence of measles maintain one to four years. Conclusion After SIAs of measles vaccine, the incidence of measles decreased obviously. To maintain the effect of measles control and prevention depended on routine immunization and SIAs as well. The key measure of elimination measles is to maintain high coverage of routine immunization. SIAs of measles vaccine is a supplementary immunization strategies for interrupting measles epidemic.