A health worker gives a dose of polio vaccine to a child during a door-to-door polio vaccination campaign in Kampala, Uganda, Feb. 17, 2023. (Photo by Nicholas Kajoba/Xinhua)
A child's finger is marked after receiving a dose of polio vaccine during a door-to-door polio vaccination campaign in Kampala, Uganda, Feb. 17, 2023. (Photo by Nicholas Kajoba/Xinhua)
A health worker gives a dose of polio vaccine to a child during a door-to-door polio vaccination campaign in Kampala, Uganda, Feb. 17, 2023. (Photo by Nicholas Kajoba/Xinhua)
