Health workers on Sunday began a polio vaccination drive in Gaza aimed at preventing an outbreak of the quick-spreading disease. Both Hamas and Israel agreed to pauses in the fighting, but the campaign may be impossible to execute for all of the enclave’s estimated 640,000 children under age 10. Largely eradicated around the world, poliovirus can thrive in unsanitary conditions and in places where vaccination rates are not high enough. In Gaza, where tens of thousands of people who have been repeatedly displaced are crammed into camps with little access to water and sanitation, such rates have dropped significantly among babies because of the war. #Polio #DeirAlBalah #Gaza