Four viruses are circulating in the U.S., sparking concerns of a possible “quademic." Here's what to know about risk factors ...

It can last up to 4 weeks. A viral infection brought on by the common cold may cause symptoms that typically last up to 10 days before starting to improve. Viral infections eventually lead to most ...

Viral or bacterial infections can occur in the middle of the ear. These often cause pain, inflammation, and fluid buildup. Treatment typically involves antibiotics. Ear infections are the most ...

In children, exanthems are most often related to infection and, of these, viral infections are the most common. Some exanthems have very specific morphologies that help identify and characterize ...

Researchers have uncovered how chronic hepatitis C infection leads to autoimmune disease, which opens new paths for treatments ...