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 ...

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, ...

Antibody tests weren't meant to gauge COVID-19 vaccine immunity. Dr. Anthony Fauci said they also wouldn't be the best sign you need a booster.

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 ...

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 ...

Testing positive for COVID-19 is not exactly a positive experience. After all, wanting to go viral these days doesn’t tend to mean wanting to be infected by the severe acute respiratory syndrome ...

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 ...

Herd immunity is important because it defines when a whole community is protected. That includes people who haven't caught the disease, people who had the illness and recovered, and people who got a ...

COVID-19 infections are rising again across the U.S. Here's which symptoms to look for and how to protect yourself over the ...

A new study analyzing the immune response to COVID-19 in a Catalan cohort of health workers sheds light on an important ...