As President Trump pushes to reopen the economy, most of the country is not conducting nearly enough testing to track the path and penetration of the coronavirus in a way that would allow Americans to safely return to work, public health officials and political leaders say.
Although capacity has improved in recent weeks, supply shortages remain crippling, and many regions are still restricting tests to people who meet specific criteria. Antibody tests, which reveal whether someone has ever been infected with the coronavirus, are just starting to be rolled out, and most have not been vetted by the Food and Drug Administration.
