Ducharme is a contributor to TIME. Ducharme is a contributor to TIME. How much protection do you currently have against COVID-19? The answer depends on so much: whether you’ve already had COVID-19 ...

A newly developed blood test that measures a specific immune response in the body could help doctors gauge how much protection a person has against Covid-19, according to a new study. The test, which ...

CAMBRIDGE - Researchers at MIT are excited about more than two years of research that has evolved with the COVID pandemic. "Potentially, [this technology] solves a lot of the debate around when ...

As highly-contagious Covid-19 subvariants proliferate, two U.S. researchers are using photonic biosensors on a chip to fight back with a wider scope of immunity testing. “What we are doing,” said Ben ...

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 ...