While an increasingly anxious world watched a new coronavirus spread across the globe in early 2020, veteran immunologist Rafi Ahmed quickly grasped that his field was about to experience something ...

In the US, COVID-19 has killed more than 1.1 million people, infected more than 100 million, and disrupted lives in ways we are still trying to understand. Our continued public health response to this ...

A rebound of COVID-19 symptoms in some patients after taking Pfizer's antiviral Paxlovid may be related to a robust immune response rather than a weak one, U.S. government researchers reported on ...

Researchers have used a method of total-body imaging to measure and track the body’s immune response to viral infection. The method is a promising platform for studying human immunity in greater ...