Here’s how fast the COVID-19 variant found in the U.K. is spreading in the U.S.

Dr. Ilhem Messaoudi, the director of the University of California, Irvine’s Center for Virus Research, said there’s a lot that can influence the outcomes mapped out in models. … “[Models are] really good about keeping us on our toes and keeping us sharp and aware, and kind of facing down, ‘Okay, this is our worst case scenario, we need to do something about it,’” Messaoudi said. … “That means that more than ever, we should not let our guard down.”