Impact of different MMR vaccination strategies on mumps incidence in Jiangsu, China: A 20-year interrupted time series analysis based on 180,000 cases.
BACKGROUND Although China upgraded its mumps vaccine schedule to two doses, quantitative evaluations of real-world, population-level effects remain limited. This study systematically evaluated the immediate and long-term impacts of 1-dose and 2-dose measles-mumps-rubella (MMR) vaccination strategies on mumps incidence...