Analysis on epidemiological characteristics of measles before and after measles vaccine supplementary immunization activities in Shijiazhuang

Objective:To analyze the epidemiological characteristics of measles before and after measles attenuated live vaccine(MV) supplementary immunization activities(SIAs) in 2007 and approach measures of measles elimination.Methods: To collect data from Measles Special Surveillance System in 2005~2009,and analyze with descriptive epidemiology.Results: After SIAs in April 2007,the reported annual measles incidences were 12.18/100000,15.70/100000,12.61/100000,1.58/100000 and 1.97/100000 separately.The average age of the incidences were from 7.8 in 2005 down to 6.26 in 2009(t=2.02,P0.05).The reported incidences of 1 year old increasingly counted for 28.9%(t=8.156,P0.01).Conclusion: A high quality SIAs was a good measure for avoiding high measles incidences.It was recommended of MV to women of childbearing age during SIAs to raise the level of maternal antibodies.Meanwhile,the second vaccination was needed after SIAs for enforcing the effects.