From March 2020 , the CDC gave restrictive guidelines on who should be eligible for COVID-19 testing during the pandemic .
Coronavirus testing is starting to get better — but it has a long way to go , STAT , March 13 , 2020From the start of the outbreak to early March 2020 , the Centers for Disease Control and Prevention gave restrictive guidelines on who should be eligible for COVID-19 testing .
2020 coronavirus pandemic in the United States