Word Count: 2256 Vaccine manufacturers face a global shortage of raw materials, the head of the world’s biggest vaccine maker and the World Health Organization said. Italy blocked a shipment of 250,000 doses of AstraZeneca Plc’s vaccine that were destined for Australia. Countries where more than half of adults are overweight have recorded Covid-19 mortality rates more than 10 times higher than other nations. Global Tracker: Cases pass 115.4 million; deaths exceed 2.5 million Inside Pfizer’s fast, fraught and lucrative vaccine distribution The vaccine revolution is coming inside tiny bubbles of fat Vaccinated workers get more office benefits than holdouts Where we are in hunting for Covid-19’s origin