"More rapid increases in mobility or reductions in mask use can easily lead to increasing cases and deaths in many states in April." The IHME team said while the B.1.1.7 strain likely accounts for less than 20% of coronavirus infections now, that number could jump to 80% by late April. That's why experts say the US should also ramp up its testing: not just to track infections and antibodies, but also variants. The IHME team wrote they do not expect the country will reach herd immunity before next winter. What if we went six weeks or eight weeks or 10 weeks -- not much longer than that."

Source: CNN February 21, 2021 07:38 UTC