Poliovirus resurgence sparks concerns in Pakistan

FILE - A health worker administers a polio vaccine to a child in a neighborhood of Karachi, Pakistan, on Jan. 8, 2024. Pakistani Musal Khan, who contracted polio at age 2, navigates life in a wheelchair.

The recent detection of poliovirus in sewage water samples collected across 30 districts in Pakistan has reignited concerns about a potential surge in polio cases.