Schematic (IMAGE) Howard Hughes Medical Institute Caption Some people with life-threatening cases of COVID-19, the disease caused by the SARS-CoV-2 virus, make auto-antibodies (red) that attack key immunity proteins. People with mild or no symptoms (left) do not make these antibodies. Credit P. Bastard et al./Science 2020 Usage Restrictions Must use credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.