Because Pfizer-BioNTech and Moderna vaccines have been developed in record time, many wonder whether companies cut corners or compromised safety.
Nov. 20, 2020 • ~6 min
covid-19 pandemic vaccines sars-cov-2 pfizer mrna moderna emergency-use-authorization biontech mrna-vaccine pfizerbiontech-vaccine
How mRNA vaccines from Pfizer and Moderna work, why they're a breakthrough and why they need to be kept so cold
There are two new COVID-19 vaccines that appear to be more than 90% effective. But what are these vaccines, and how are they different from those used previously?
Nov. 18, 2020 • ~8 min
covid-19 pandemic vaccines sars-cov-2 cold-chain covid-19-vaccine pfizer mrna moderna biontech
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