Immunologist Juanita Mora has been arranging antibody testing in Chicago for people who need the test to go back to work. A positive test doesn’t guarantee immunity from coronavirus reinfection, she tells her patients. Social distancing and other precautions are still important.

Immunologist Juanita Mora has been arranging antibody testing in Chicago for people who need the test to go back to work. A positive test doesn’t guarantee immunity from coronavirus reinfection, she tells her patients. Social distancing and other precautions are still important.