A nasty, highly contagious virus is spreading across the country ahead of the holiday season — and it’s not the flu or Covid. Norovirus, also called the “winter vomiting disease,” has been rising ...

Human immunodeficiency virus (HIV), which causes acquired immunodeficiency syndrome (AIDS), has been estimated to infect around 40.8 million people globally. This virus can persist and thrive in the ...

Nearly all adults carry Epstein–Barr virus—but new research reveals how it can hijack immune cells, sparking a chronic disease that attacks the body from within. This colorized transmission electron ...