Effectiveness of a 2-dose varicella vaccination program in Changzhou, China, during the transitional period (2017-2022): a registry-based case-cohort study
Suting Xiong,
Changlei Han,
Dan Wu
et al.
Abstract:Background
The benefits of high coverage and timeliness of varicella vaccination need to be quantified in countries where varicella vaccine (VarV) has not yet been included in national immunization programs. This longitudinal study analyzed the vaccine effectiveness (VE) of the varicella vaccination program implemented in Changzhou City during the transitional period (2017–2022).
Methods
Using the Immunization Information System and National Notifiable Infectious Disease Surveillance System registry data, th… Show more
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