More than four years since the coronavirus ignited a global pandemic, the virus officially named SARS-CoV-2 keeps evolving — and so does our understanding of how it works. Some of our early ...

As we get into another winter holiday season, COVID is still part of our lives. And although it's hard to predict exactly what this year's cold, flu and coronavirus season will look like, experts want ...

So when and how should you use them? By Dani Blum Yet again this winter, millions of Americans will wonder if a nagging cough or body aches is a sign they’re coming down with Covid or the flu. This ...

H1N1 influenza cases are rising across India, with Delhi and Karnataka among the places reporting a sharp increase in ...

Hi, it’s Bob in New York. Like many people, I recently got sick after being exposed to Covid at a family gathering. My test results were interesting. But first ... I was exposed to Covid at a family ...

While many respiratory viruses—including COVID-19, RSV and influenza—circulate year-round in California, they are typically more active between October and March, according to the California ...

A few things have changed about the vaccines from previous seasons.