F.D.A. approves first coronavirus antibody test in U.S.

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A cell, in greenish brown, heavily infected with coronavirus particles, in pink.

Such a test may help scientists learn how widespread the infection is, and how long people remain immune after recovering.

A cell, in greenish brown, heavily infected with coronavirus particles, in pink.Credit…Niaid, via Reuters

The Food and Drug Administration on Thursday approved a new test for coronavirus antibodies, the first for use in the United States.

Currently available tests are designed to find fragments of viral genes indicating an ongoing infection. Doctors swab the nose and throat, and amplify any genetic material from the virus found there.

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