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)

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)

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)

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)