Mono or mononucleosis is a common illness, but many know little about it. It is caused mainly by an infection of the Epstein-Barr Virus, though other viruses can also cause it. Mono has symptoms similar to other illnesses, but the symptoms can be concerning as they may last for months. It is essential to know mono symptoms and understand when to get tested for this "kissing disease." AFC Urgent Care Elizabeth provides testing for mono ...