SAN FRANCISCO -- There has been a lot of talk about testing for the coronavirus, but you may not entirely understand what the different tests are for. The coronavirus makes some people sick, some ...

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 ...

As millions of Americans turn to at-home Covid testing for convenience and quick results, health experts warn that unreported positive cases are creating blind spots in our ability to track and ...

Both COVID cases and hospitalizations have climbed in recent weeks, leading to heightened concerns ahead of the usual cold and flu season. But this time around, the director of the Center's for ...

As mask mandates are lifted and restrictions removed in a step toward normalcy, a test to measure immunity would be a powerful tool to measure individual risk. In 2010, doctors told Ben Sobieck, now ...

As COVID cases rise over the winter, health experts are finding that it’s taking longer to figure out if someone is infected. When COVID-19 antigen tests — also known as rapid tests — first came out, ...

EVANSTON, IL — Is it possible you were infected with a mild form of COVID-19 and didn’t know it? How robust is your body’s immune response to the vaccine, and how will we know whether we’ve reached ...

Two new tests have been developed in the Boston area that are designed to predict immunity to COVID-19. MIT has a new blood test that can potentially predict COVID-19 immunity, while Harvard has a ...

COVID-19 certainly didn't take a vacation this summer. Virus levels in the US have been on the rise for weeks, but it's hard to know exactly how widely it's spreading. Federal data suggests that the ...

CHICAGO -- COVID-19 is on the rise again as the world approaches the fourth virus season since the coronavirus arrived on the scene. US Centers for Disease Control and Prevention data show a slight ...