Testing is down 40% in two of the hardest-hit states — Texas and Florida. Ashish Jha of Harvard's Global Health Institute explains what might be going on.

NPR's Alison Aubrey describes a new COVID-19 test developed by Yale University that works with saliva.

And NPR's Kirk Sielger reports on a school district in Idaho that's preparing to reopen — and possibly close right back down again.

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