“The CDC, changing its Covid-19 testing guidelines, no longer recommends testing for most people without symptoms, even if they’ve been in close contact with someone known to have the virus. Many doctors are puzzled by the agency’s change. Some doctors and infectious disease experts were more than puzzled; they were angry. One factor that makes this disease so dangerous is its capacity for asymptomatic spread. Perhaps as many as 40 percent of those infected show no symptoms. To get a handle on how and where the virus is spreading requires testing.

Rotten in Denmark: The Centers for Disease Control stopped Recommending Testing and Tracing