These containers will deliver Covid-19 vaccines across continents and oceans. But they were made to ship something else entirely

It's one of the biggest logistical challenges in modern history: How will millions of Covid-19 vaccine doses that must be kept at incredibly cold temperatures be quickly shipped across continents and oceans?

source https://www.cnn.com/2020/12/12/business/thermo-king-coronavirus-vaccine-freezer/index.html