Bacterial and viral acute sinus infections typically display similar symptoms. The duration of the infection can help determine if it is viral or bacterial. Many viruses, such as the ones that cause ...

The Epstein-Barr virus and a high-risk gene may work together to trick the immune system into attacking the brain in MS, a ...

One of the remaining mysteries of the human immune system is why a certain cell, called a B cell, which retains a memory for past infections -- ensuring we fight off diseases we have experienced ...

Human immunodeficiency virus (HIV) is a germ that causes a lifelong infection that slowly weakens the immune system. Though the infection is lifelong, medicines can keep the virus in check and help ...

Scientists have uncovered a surprising viral shortcut that turns moving cells into delivery vehicles for infection. Instead ...

Vaccination against hepatitis B is a common recommendation, but what exactly is it preventing? HHS Secretary Robert F. Kennedy Jr. and his advisory group plan to meet this week to discuss and vote on ...