National immunization program vaccination rates surveyed in Longwan District of Wenzhou City

ObjectiveTo assess coverage of national immunization program (NIP) vaccination among children in Longwan District of Wenzhou City.

MethodsProbability Proportionate to Size (PPS) Sampling method was used in the survey.The vaccination information and related data were collected from 1 510 children in Longwan District.

ResultsThe percentage of children with immunization cards was 99.63%.The coverage rate for Bacilli Calmette-Guerin vaccine (BCG) was 97.09%, for the third dose of Hepatitis B vaccine (HepB_1-3) 93.91%, for the first dose of HepB in timely 90.66%, for the third dose of diphtheria, tetanus and pertussis combined vaccine (DTP_1-3)90.73%, the third dose of poliomyelitis attenuated live vaccine (PV_1-3) 95.10%, the first dose of measles-containing vaccine (MCV₁) 92.38%, MCV₁ in timely 66.84%, the first-dose Japanese encephalitis vaccine (JEV₁) 62.58%, for the 2-dose group A meningococcal vaccine (MPV-A_1-2) 77.57% and for the first-dose hepatitis A vaccine (HepA) 61.69%.Coverage of the full-series for 5 vaccines (BCG, HepB_1-3, PV_1-3, DTP_1-3, MCV₁) was 82.58% and for 7 vaccines was 53.97%.Coverage rates for the second dose of MCV (MCV₂), the fourth dose of DPT(DPT₄), the second dose of JEV(JEV₂), the first dose of MPV-AC, the second dose of MPV-AC and DT were 82.23%, 71.80%, 69.99%, 64.22%, 22.22%, 44.44%, respectlvely.The Coverage rates for unqualified vaccination was 14.08%.The main reason was overdue vaccination (63.62%) and unvaccination (31.20%).

ConclusionCoverage rate for the BCG, PV_1-3, DTP_1-3, MCV₁, HepB_1-3 vaccines maintained a high level among children in Longwan District, but was lower in booster-dose vaccines and new vaccines integrated into NIP.And the vaccination rate is higher in children with household registration than in those without.In this regard, multi-sectoral collaboration should be strengthened.For children enrolled in school, combined with checking vaccination certificate, corresponding measures as re-vaccination should be taken to improve the immunization coverage rates and timely rates.