We brrr-ing you inside an ultra-cold freezer, the super-chilled home of the COVID-19 vaccine

Everyday items in ultra low-temperature freezer

Ultra-cold freezers can keep vaccines chilled to sub-arctic temperatures. But why does anything need to be kept that cold? And what happens to regular food items when they're subjected to such extreme temperatures?



from CBC | Health News https://ift.tt/3j9NlIY

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