New COVID-19 variants explained: What threat do they pose? Doctor weighs in
As distribution of Pfizer's COVID-19 vaccine begins, here's how doses will be distributed - and how you can find out where you stand in line. "This variant is more fit, or it works better," he said. "Naturally, there's going to be more of it and it's going to be transmissible more easily and grow more readily and then kind of take over, so to speak, the population of viruses." Rhoads says viruses mutate randomly all the time and scientists have been expecting the coronavirus' genetic makeup to change. He says mutation is a little like somebody recopying a script over and over, and occasionall...