The night is darkest just before dawn, they say. Dark it certainly is right now. The more contagious variants of SARS-CoV-2 coming out of the U.K. and South Africa will make the pandemic worse before mass vaccination can make it better.
But take another look at some of these new vaccines. And then contemplate the dawn to come — not just its first rays in the coming months but also the bright light of future years and decades. It looks increasingly plausible that the same weapons we’ll use to defeat COVID-19 can also vanquish even grimmer reapers — including cancer, which kills almost 10 million people a year.
The most promising COVID-19 vaccines use nucleic acids called messenger RNA, or mRNA. One vaccine comes from the German firm BioNTech SE and its U.S. partner Pfizer Inc. The other is from the U.S. company Moderna Inc. (its original spelling was ModeRNA, its ticker is MRNA). Another is on the way from CureVac NV, also based in Germany.