Study on the epidemiological features of measles and the strategies for its prevention and treatment from 1950 through 2004 in the city of Leshan

Objective This investigation was conducted to understand the epidemiological fea-tures of measles and explore strategies for the prevention and treatment of the epidemic．Methods SPSSlO.0 software package was used for general statistical analysis and cki-square test．Results Statistics showed that after the implementation of planned immunization the incidence rate of measles decreased by 92.15％，and the mortality of the disease decreased by 98.85％．And a trend that onset began at an older age was seen(X2=283.26，PX2=359.24，P