The immune system’s first encounter with a virus or vaccine establishes a “starting template” that shapes its response to new ...

COVID-19 tests used to be able to detect a positive case within the first 48 hours, but many results are now delayed until four days after symptoms appear, according to the LA Times. Elizabeth Hudson, ...

For at least 10 months after a COVID-19 infection, your immune system can provide good protection against symptomatic illness the next time around, a new study found, and the risk of severe illness is ...

This study shows that SARS-CoV-2 infection and vaccination generate strong, highly specific spike-binding immune responses ...

A medical expert explains whether people who have already recovered from COVID-19 should still get vaccinated. Learn how ...

Seattle’s Morning News recently checked in with virologist Dr. Keith Jerome, who has helped us understand COVID-19 and other viral illnesses since the start of the pandemic. This winter, it seems ...

Share on Pinterest A healthcare professional tends to a person in the COVID-19 unit at United Memorial Medical Center in Houston, TX, on July 2, 2020. MARK FELIX/Getty Images A previous infection with ...

A T-cell test developed by Adaptive Biotechnologies could become the first commercially available test of its kind, and it may be more effective at detecting past COVID-19 infections than antibody ...