*US experts warn new Covid variants and states reopening may lead to fourth wave.*

*Fauci: US shouldn't loosen coronavirus restrictions until daily new cases fall below 10,000.*

That is assuming your goal is to make Covid-19 go away. Republicans, who boosted the infection last year and killed perhaps 300,000 Americans who otherwise would not have caught it, are still trying to spread it. Perhaps their motive is that they expect it to kill mainly blacks.

I would add an additional proviso: we should not loosen coronavirus restrictions unless we can determine that R will remain substantially under 1 after they are loosened.