GENEVA The World Health Organization (WHO) chief announced on Friday that the postponed polio vaccination in northern Gaza, where Israel launched military operations early October, will resume on Saturday. "Tomorrow, the third phase (last zone of second dose campaign) of the polio vaccination campaign is set to begin in the northern part of the Gaza Strip, after it was postponed last week due to intense bombardment, mass evacuation orders, and lack of access or assurance of humanitarian pauses,"