Troubling headlines have been cropping up across Asia: Patients who were diagnosed with COVID-19 and seemingly recovered have been readmitted to the hospital after testing positive for the virus again ...

Covid-19 was never just another cold. We knew it was going to stick around and keep changing to try to get the upper hand on our immune systems. But we’ve changed, too. Our B cells and T cells, ...

Scientists are getting a better handle on the complexities of how immunity works. Attentive readers might have noticed my absence over the last couple of weeks. I’ve been trying to recover from a bout ...

Q: How do I know the state of my immune system? Can I get it tested, and how do I support it? A: It’s normal to catch a few run-of-the-mill infections every year. That may include two to three colds, ...

A new blood test can help determine how long a vaccine will last in a person The test is based on a new understanding of what makes a durable vaccine response It looks for blood cells shed by cells in ...