The World Health Organization has added the variant, known formally as XFG, to its monitoring list. A dry, irritated throat ...

A head cold, or common cold, is a viral infection of the nose and throat. It is usually a mild illness, and involves symptoms in the head, such as a stuffed, runny nose and watery eyes. According ...

A contagious new COVID-19 variant called NB.1.8.1, aka "Nimbus," is now dominant in the United States, CDC data show. What to know about symptoms and vaccines.