Officials change virus testing advice, bewildering experts

NEW YORK (AP) — U.S. health officials have sparked a wave of confusion after posting guidelines that coronavirus testing is not necessary for people who have been in close contact with infected people.

The new guidance was posted earlier this week on the website of a federal agency, the Centers for Disease Control and Prevention.

The CDC previously had advised local health departments to test people who have been within 6 feet of an infected person for more than 15 minutes. But on Monday a CDC testing overview page was changed to say that testing is no longer recommended for symptom-less people who were in close contact situations.

There was a caveat, however. Testing may be recommended for those with health problems that make them more likely to suffer severe illness from an infection, or if their doctor or local state officials advise they get tested.

CDC officials referred all questions to the agency's parent organization, the U.S. Department of Health and Human Services in Washington, D.C. That suggests that HHS ordered the change, not CDC, said Jennifer Nuzzo, a Johns Hopkins University public health researcher.

After twitter lit up with head-scratching and alarm about the change, HHS officials sent an email Wednesday saying the guidance was revised “to reflect current evidence and the best public health interventions,” but did not detail what the new evidence was.

The officials also said they wanted to emphasize that people should follow measures designed to help stop spread of the virus, like wearing a mask, staying at least 6 feet apart from others and washing hands.

The decision came out of meetings of a White House coronavirus task force, the email said.

In a call with reporters later Wednesday, Dr. Brett Giroir, the HHS assistant secretary for...