Companies may have to transport tiny glass vials thousands of miles while keeping them as cold as the South Pole in the depths of winter.
A recent study by DHL and McKinsey found that a cold vaccine would be accessible to about 2.5 billion people in 25 countries. Large parts of Africa, South America and Asia, where super-cold freezers are sparse, would be left out.
“The consequence is to reinforce the staggering bias in favor of the wealthy and powerful few countries,” said Morrison, of the Center for Strategic and International Studies.