COOPER: Infectious disease groups are calling for immediate reversal of changes to CDC testing guidelines for coronavirus. On Monday, the agency quietly made the revisions, including removing their recommendation for testing asymptomatic people even if they've come into contact with someone who has the virus. CNN senior medical correspondent Elizabeth Cohen joins us now. So what are these groups saying?</s>ELIZABETH COHEN, CNN SENIOR MEDICAL CORRESPONDENT: Anderson, essentially, what these groups are saying is, CDC what were you thinking? Of course people who are asymptomatic need to be tested if they've been in close contact with someone who has COVID-19. Even though they're asymptomatic, they still need to be tested. So let's take a look at what the Infectious Disease Society is saying. As you mentioned, they're calling for a reversal of the CDC's decision. They said, "Identifying individuals infected with COVID-19 even if they are asymptomatic is critical to support appropriate isolation and identification of contacts to limit spread and to provide the data-driven comprehensive view of community spread needed to inform effective public health responses. In other words, they're saying, if we don't know who's positive, how do we know who to isolate? And then we trace your contacts. But if we don't even know that person is positive, how do we take those next steps -- Anderson.</s>COOPER: Elizabeth Cohen, thank you very much. Appreciate it. New details about the alleged gunman in a deadly shooting during protests in Wisconsin. His online footprint, we'll show you what it shows. We'll be right back.
Medical Colleges Ask CDC to Reverse Changes on Testing Guidelines.