In patients with COVID-19, the immune system’s T cells learn to recognize and target the new coronavirus. But some people who were never infected with the virus nonetheless have T cells that also recognize it. Researchers had suspected that in these individuals, past exposure to other coronaviruses, such as those that cause the common cold, had somehow primed their T …
Read More »Exposure to common colds may impact COVID-19 severity
August 8, 2020