![Muhammad Sajjad A health worker administers a polio vaccine to a child at a health center in Peshawar, Pakistan, Monday, Dec. 16, 2024. (AP Photo/Muhammad Sajjad)](https://mapi.associatedpress.com/v2/items/a823e02263b54b3abfc1e5e8bdd97f4b/preview/preview.jpg?s=680x&wm=false)
A health worker administers a polio vaccine to a child at a health center in Peshawar, Pakistan, Monday, Dec. 16, 2024. (AP Photo/Muhammad Sajjad)
![Muhammad Sajjad A police officer stands guard as a health worker administers a polio vaccine to a child, in Peshawar, Pakistan, Monday, Dec. 16, 2024. (AP Photo/Muhammad Sajjad)](https://mapi.associatedpress.com/v2/items/f5afe468aca743e888bf62a8f87f1034/preview/preview.jpg?s=680x&wm=false)
A police officer stands guard as a health worker administers a polio vaccine to a child, in Peshawar, Pakistan, Monday, Dec. 16, 2024. (AP Photo/Muhammad Sajjad)
![Muhammad Sajjad A health worker administers a polio vaccine to a child at a health center in Peshawar, Pakistan, Monday, Dec. 16, 2024. (AP Photo/Muhammad Sajjad)](https://mapi.associatedpress.com/v2/items/c7b0e42083394f67b596d88f448915a4/preview/preview.jpg?s=680x&wm=false)
A health worker administers a polio vaccine to a child at a health center in Peshawar, Pakistan, Monday, Dec. 16, 2024. (AP Photo/Muhammad Sajjad)
![Muhammad Sajjad A health worker administers a polio vaccine to a child at a health center in Peshawar, Pakistan, Monday, Dec. 16, 2024. (AP Photo/Muhammad Sajjad)](https://mapi.associatedpress.com/v2/items/8b6677b7c0504d59930334d40cca18e6/preview/preview.jpg?s=680x&wm=false)
A health worker administers a polio vaccine to a child at a health center in Peshawar, Pakistan, Monday, Dec. 16, 2024. (AP Photo/Muhammad Sajjad)