Measles vaccine supplemental immunization activity in Guangdong Province,2009

Objective To analyze experience of mass measles vaccine supplemental immunization activity(SIA) in Guangdong Province during March-April 2009,in order to provide scientific basis for making the strategy of measles elimination in 2012.Methods Data were collected from 21 municipalities which carried out measles vaccine supplemental immunization on children aged from 8 months to 14 years in Guangdong Province.The descriptive methodology was used in this paper.Results Total 20 437 255 children aged from 8 months to 14 years were found and registered.19 952 519 children were vaccinated in the SIA,with the coverage rates from 71.66% before the SIA to 98.10%(P0.01) by fast coverage assessments.The people's awareness rate of the SIA was 91.86% at the start of the SIA,rising to 98.48%(P0.01) in the period of the SIA.The reported incidence rate of adverse events following immunization(AEFI) was 4.21 per 100 000 of measles vaccinations.The incidence rate of measles decreased from 16.10 per 100 000 in 2008 to 2.22 per 100 000 in 2009.The decrease in number of cases was 92.59% during May-December 2009,comparing with the same periods in 2008.Conclusion SIA is an effective measure of control and elimination of measles.Government leadership,multi-departments cooperation,massive campaign of social mobilization and well-organized vaccination processes are the crucial factors for successful fulfilment of SIA with high quality.