Objective To explore varicella vaccine coverage and factors influencing coverage among 3-17-year-old children in agricultural and pastoral areas of Qinghai province.Methods We used a stratified cluster sampling method to select children aged 3-17 years from kindergartens and primary/secondary schools in agricultural and pastoral areas of Qinghai for a questionnaire-based survey of their guardians.We compared coverage levels of one and two doses of VarV(VarV1 and VarV2)before and after a catch-up vaccination activity initiated in October 2021,and identified factors influencing VarV1 coverage.Results VarV1 and VarV2 coverage levels after the catch-up activity were 79.06％(676/855)and 43.79％(363/829),respectively,and increased by 34.38 and 24.13 percentage points compared with before the catch-up activity.Multivariate logistic regression showed that VarV1 coverage was higher in agricultural areas than in pastural areas(OR=4.63,95％CI:2.91-7.39),and higher among children whose guardians scored 4-6 or 7-10 points on knowledge about varicella and VarV than among children whose guardians scored 0-3 points(OR=8.61,95％CI:4.73-15.69;OR=2.86,95％CI:1.69-4.84).Conclusions The catch-up activity significantly increased VarV coverage among children in the surveyed areas.We should strengthen health education on knowledge about varicella and VarV among guardians of children in Qinghai,especially in pastoral areas,to promote VarV vaccination of age-eligible children.
Varicella vaccineCoverageInfluencing factorAgricultural and pastoral areasChildren
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