Measles outbreak risk in Afghanistan: provincial immunity gaps and epidemic potential following immunisation system disruption.
BACKGROUND Following the 2021 political transition, Afghanistan's routine immunisation system experienced disruption. The 2022-23 Afghanistan Multiple Indicator Cluster Survey (MICS) estimated national first-dose measles-containing vaccine (MCV1) coverage at 51.2% (95% CI 49.1-53.2). Provincial heterogeneity in coverag...