An Indian medical volunteer administers a dose of polio vaccine to a child as part of the Indian National Pulse Polio Immunisation Programme in Bangalore, India, Feb. 27, 2022.(Photo: Xinhua)
An Indian medical volunteer administers a dose of polio vaccine to a child as part of the Indian National Pulse Polio Immunisation Programme in Bangalore, India, Sunday, Feb. 27, 2022.(Photo: Xinhua)
An Indian medical volunteer administers a dose of polio vaccine to a child as part of the Indian National Pulse Polio Immunisation Programme in Bangalore, India, Feb. 27, 2022.(Photo: Xinhua)
An Indian medical volunteer administers a dose of polio vaccine to a child as part of the Indian National Pulse Polio Immunisation Programme in Bangalore, India, Feb. 27, 2022.(Photo: Xinhua)