Monitoring and evaluation of the routine immunization coverage in children aged 1-7 years in 2013 in Fenghua Zhejiang

Abstract

Objective To evaluate the routine immunization coverage of children in Fenghua and explore the relative determinants after using the Immunization Information System (IIS) , so as to improve the management strategy. Methods Immunization records of children aged 1-7 years (born from January 1, 2006 to December 31, 2012) were collected from Zhejiang provincial IIS. Coverage rates for each vaccine (dose) recommended by National Immunization Program (NIP) and timeliness of the first dose measles containing vaccine (MCV) were analyzed by age groups. Results A total of 36 139 children aged 1-7 years were enrolled, 47.80% of which were migrants. Coverage rates of the vaccines (doses) for resident children mostly exceeded 95.00%, while those for migrants were between 56.18% and 100.00%. Coverage rates of the 2nd dose of group A meningococcal polysaccharide vaccine (MPV-A2) and the 4th dose of diphtheria pertussis tetanus vaccine (DTP4) for migrant children aged 2-7 years were significantly lower than resident children, especially for the children aged 6-7 years. Coverage of the 2nd dose of group A and C meningococcal polysaccharide vaccine (MPV-AC2) for the group of 7 years old was low, and the vaccination rate of migrant children was 57.63%. The timeliness vaccination rate of MCV1 raised from 75.92% before 2011(3-7yearsold) to 92.46% after 2011(<3yearsold) , but it was lower for migrant children compared with resident children in every age group. Conclusions The routine immunization coverage of children in Fenghua maintains a high level, but coverage of booster doses which scheduled to be given at an older age is relatively low, and migrant children was lower than resident children. Key words: Immunization programs; Information system; Vaccination rate