The Trump administration says it will now spend billions of dollars to help states make COVID-19 testing more widely available, a move meant to address months-long complaints about test shortages.
But here's the puzzle: Many labs say they have plenty of tests. So what's the disconnect?
Turns out a "test" is not a single device. COVID-19 testing involves several steps, each one requiring different supplies, and there are shortages of different supplies at different times in different places.