Immunization coverage rate among children in Fushun city of Liaoning province, 2014 – 2017

  Objective  To explore the feasibility of assessing immunization coverage rate among children based on the data from Children Immunization Information Management System (CIIMS).

  Methods  First we searched CIIMS for vaccination records of 21 218 children aged 1 – 2 years (born between October 1st 2014 and September 30th 2017) in Fushun city; then we conducted a household survey on inoculation status among 640 children at ages of 1 – 2 years selected with probability proportional to size (PPS) sampling from 8 counties or districts of the city. We analyzed and compared the data collected from both the CIIMS and the sampling survey. Conventional reports on planned immunization among the children during the period were also collected and analyzed.

  Results  For all the designated medical institutions conducting planned immunization vaccinations of the children in the city, the CIIMS application rate was 100% during the period from 2014 to 2017; the rate of uploading and backing up vaccination records within 5 days after completing vaccination services was 100% and the reported timely vaccination rate (within 5 days of prescribed time limit) was 95% in 2017. Comparisons between the results from the statistics of CIIMS and the sampling survey showed that there were significant differences in coverage rates of 9 doses (69.23%, including the 3rd dose of hepatitis B vaccine, 1st/2nd/3rd doses of inactivated polio vaccine/oral polio vaccine and diphtheria-pertussis-tetanus, and 1st/2nd doses of measles containing vaccine) out of the 13 doses of planned immunization vaccines (all P < 0.05 ). In addition, statistically significant differences were observed between the conventional reports and the statistics of CIIMS in the coverage rates of all the 13 doses (P < 0.05 fro all).

  Conclusion  In Fushun city, the Children Immunization Information Management System, provided under regular maintenance, could be utilized to acquire timely and accurate data on planned immunization among children and to calculate the inoculation rate directly.