NEW: Information about antibody testing (serodiagnosis) of COVID-19

There is a lot of conjecture about the value of antibody (serologic) testing for COVID-19, and what this type of testing will and won’t offer to help us understand the course of the pandemic. To provide clear, up-to-date information and perspective, David Aronoff, MD, Addison B. Scoville Chair in Medicine and Director of the Division of Infectious Diseases, has provided these answers.