We conducted an interrupted time series (ITS) analysis using national records from Health Information Management System (HMIS) on monthly aggregate data for MCV1, MCV2, and laboratory-confirmed cases from 2017- 2022, with March 2020 as the break-point. Using R, we compared the immunization coverage before and during the pandemic. We applied a quasi-Poisson regression, adjusted for seasonal trends and estimated the rate ratios for the level and slope changes at 95% confidence interval (CI).