Friday’s change in masking guidance from the Centers for Disease Control and Prevention comes as many states and cities across the U.S. are starting to — or already have — ease up on mask mandates.
"Dr. Abraar Karan"
A guide to COVID tests: When to test, what kind to use and what your results mean
In an ideal world, the U.S. would be awash in COVID tests. Anyone exposed to COVID-19 could self-test and/or go to a lab or clinic for a test if necessary. But right now, self-tests are in short supply in many parts of the country.