May 14, 2020 - Health

AMA cautions use of coronavirus antibody tests to determine "immunity"

An EMT sorts through blood samples to test for COVID-19 antibodies at Abyssinian Baptist Church in Harlem, New York City on May 14. Photo: Angela Weiss/AFP via Getty Images

Antibody tests that identify those who have previously contracted the coronavirus should not be used to determine immunity, the American Medical Association cautioned in a Thursday report.

The big picture: Antibody tests help medical workers find out how widespread the coronavirus is in a given community, which New York state has pursued in recent weeks. These tests detect the antibodies the body produces when it fights off a coronavirus infection, but scientists don't know whether that translates into immunity, or how long such immunity might last.

What they're saying: The FDA "does not automatically independently verify performance" of antibody tests after granting them emergency authorization, the AMA writes — and tests that are not commercially marketed do not require FDA authorization.

  • Antibody tests should not be used as justification for returning for work or discontinuing social distancing practices, the AMA says.

Where it stands: Roughly 12 commercial antibody tests have received emergency authorization by the FDA, while over 120 others are currently on the market, the AMA writes.

Go deeper: Coronavirus antibody tests see reliability and availability problems

Go deeper

Updated 5 mins ago - Politics & Policy

In photos: Protests intensify across the U.S. over George Floyd's death

Protesters outside the Capitol in Washington, DC, on May 29. Photo: Eric Baradat/AFP via Getty Images

Mass protests in Atlanta, New York City and Washington, D.C., sparked clashes with police on Friday, as demonstrators demanded justice for the death of George Floyd, a black man who died after at least one police officer knelt on his neck on Monday.

The big picture: The officer involved in the killing of Floyd was charged with third-degree murder on Friday, after protests continued in Minneapolis for three days.

Updated 1 hour ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Global: Total confirmed cases as of 10 p.m. ET: 5,923,432— Total deaths: 364,836 — Total recoveries — 2,493,434Map.
  2. U.S.: Total confirmed cases as of 10 p.m. ET: 1,745,930 — Total deaths: 102,808 — Total recoveries: 406,446 — Total tested: 16,099,515Map.
  3. Public health: Hydroxychloroquine prescription fills exploded in March —How the U.S. might distribute a vaccine.
  4. 2020: North Carolina asks RNC if convention will honor Trump's wish for no masks or social distancing.
  5. Business: Fed chair Powell says coronavirus is "great increaser" of income inequality.
  6. 1 sports thing: NCAA outlines plan to get athletes back to campus.

Zuckerberg says Trump’s “shooting” tweet didn’t violate Facebook’s rules

Mark Zuckerberg at the 56th Munich Security Conference in Munich, Germany on February 15. Photo: Abdulhamid Hosbas/Anadolu Agency via Getty Images

Facebook did not remove President Trump's threat to send the National Guard to Minneapolis because the company's policy on inciting violence allows discussion on state use of force, CEO Mark Zuckerberg explained in a post on Friday.

The big picture: Zuckerberg's statement comes on the heels of leaked internal criticism from Facebook employees over how the company handled Trump's posts about the Minneapolis protests and his unsubstantiated claims on mail-in ballots — both of which Twitter has now taken action on.