Why it matters nowThe findings suggest that routine one-dose MCV delivery alone is insufficient to reach the measles population-immunity threshold under the model's central assumptions, and that sustained two-dose routine immunisation, high-reach SIAs, and restored immunisation-system capacity may be required.
Why it matters nowThe findings highlight the continued risk posed by persistent WPV1 transmission in endemic areas and the geographic spread of cVDPVs, informing the need for improved campaign quality, sustained surveillance, expanded nOPV2 use where cVDPV2 transmission persists, and strategic resource allocation under declining global health funding.
Why it matters nowOngoing vector proliferation and documented viral circulation indicate a growing regional burden that warrants coordinated monitoring strategies.