Mononucleosis is an infectious and very contagious disease. Mononucleosis is also commonly known in short as mono and is quite common among teens and young adults. EBV which is the Epstein-Barr virus is one of the most common causes of mononucleosis; however, other viruses can also cause mononucleosis, but Epstein-Barr virus is the most common of the viruses to cause the disease. Viruses like mono are most commonly spread through bodily fluids, particularly saliva. They can also spread through blood, semen, organ transplants, and blood transfusions. There is no vaccine available to prevent anyone from getting mono, but you can protect yourself from getting mono by not sharing drinks, food, or other personal items that may share bodily fluids like toothbrushes, and kissing. To relieve symptoms of mono in children, you can help by providing plenty of fluids to keep the child hydrated, tons of rest to fight off the virus, and taking over-the-counter medications to help with their pain and fever.