In this Wednesday, March 11, 2020 file photo, a technician prepares COVID-19 coronavirus patient samples for testing at a laboratory in New York's Long Island. A series of missteps at the nation's top public health agency caused a critical shortage of reliable laboratory tests for the coronavirus, hobbling the federal response as the pandemic spread across the country like wildfire, an Associated Press review found. (Source: AP Photo/John Minchillo/AP)