U.K. coronavirus variant spreading rapidly through United States, study finds

The coronavirus variant that shut down much of the United Kingdom is spreading rapidly across the United States, outcompeting other strains and doubling its prevalence among confirmed infections every week and a half, according to new research made public Sunday. … What concerns me is the exponential growth in the early stages doesn’t look very fast,” said Andrew Noymer, an epidemiologist at the University of California, Irvine who was not part of the new study. “It kind of putzes along — and then goes boom.”