COVID Vaccine Rollout Pits Fairness against Speed

This College Professor Became An Overnight Billionaire Fighting Covid

The Moderna mRNA vaccine works against newly emerged COVID-19 mutants. Mutants like B.1.1.7 and B.1.351 carrying changes in the virus spike protein appear to help the virus spread, but not to evade currently available vaccines

Double-Masking: How Two Masks Block Covid-19 Coronavirus Better Than One