epa12342237 A health worker marks the thumb of a child at a school during a door-to-door vaccination campaign, in Karachi, Pakistan, 01 September 2025. A week-long anti-polio campaign was set to begin on 01 September in 99 high-risk districts across Pakistan, excluding nine flood-affected districts in eastern Punjab, health officials said. The drive aims to...

epa12342236 A health worker marks the thumb of a child at a school during a door-to-door vaccination campaign, in Karachi, Pakistan, 01 September 2025. A week-long anti-polio campaign was set to begin on 01 September in 99 high-risk districts across Pakistan, excluding nine flood-affected districts in eastern Punjab, health officials said. The drive aims to...

epa12342235 A health worker administers polio vaccine drops to a child at school during a door-to-door vaccination campaign, in Karachi, Pakistan, 01 September 2025. A week-long anti-polio campaign was set to begin on 01 September in 99 high-risk districts across Pakistan, excluding nine flood-affected districts in eastern Punjab, health officials said. The...