Moderna’s coronavirus vaccine is similar to the <a href=”https://www.cnn.com/2020/12/11/health/pfizer-vaccine-what-we-know/index.html” target=”_blank”>Pfizer-BioNTech vaccine</a> that was the first Covid-19 vaccine authorized and shipped out to the first Americans last week.

But there are a few key differences. Most importantly, Moderna’s vaccine can be stored in normal freezers and does not require a super-cold