The immune system’s first encounter with a virus or vaccine establishes a “starting template” that shapes its response to new ...

New findings on long COVID reveal that COVID-19 patients who were hospitalized within the first 30 days after infection face a 29% higher risk of death in the third year post-infection compared with ...

Getting COVID-19 today is much less scary and more common than it was three years ago. By now, many people have had it not just once, but two, three, or even more times. Most of the time, repeat ...