In this Aug.3, 2020, file photo, UMC respiratory therapist Diana Vega seals a COVID-19 test in …

In this Aug.3, 2020, file photo, UMC respiratory therapist Diana Vega seals a COVID-19 test in a biohazard bag during a preview of COVID-19 testing site inside Cashman Center Exhibit Hall A in Las Vegas. (Elizabeth Brumley/Las Vegas Review-Journal)