The summer of 1950 brought one of the most punishing polio outbreaks in U.S. history to rural Wytheville in southwestern Virginia. Half a century later, after vaccines had killed off the disease in most of the world, polio drew a target on India and fixed the bull’s-eye to a northern district known for its brass exports: Moradabad. This narrative two-part series explores the stories of two communities fighting polio in different times and places.