Vaccinating poor countries against covid is not charity; it’s an investment, an infusion of global economic stimulus. This is takeaway from study to be released Monday. My analysis https://www.nytimes.com/2021/01/23/business/coronavirus-vaccines-global-economy.html?referringSource=articleShare

2/ even if wealthy countries are fully vaccinated, costs of not sharing vaccines with developing countries could run as high as $9 trillion in lost output this year, with half of those costs hitting advanced economies

3/ even a more modest hit, where some vaccines reach developing countries this year, could yield damage up to $3.8 trillion. Compared to that, the $27bn needed by Act A/Covax to provide vaccines to poor countries is a rounding error, says @SelvaDemiralp one of study authors