Mononucleosis is also known as mono, Epstein-Barr virus infection, or “the kissing disease”. Mono is caused by the Epstein-Barr virus. The condition is transmitted by an infected person’s saliva. Therefore, you can catch the condition by sharing saliva with someone either by kissing, sharing a drink, sharing food utensils, or being close to someone who has mono and coughs or sneezes. Mono can last anywhere from ten days to three months. Unfortunately, there is no medical treatment for mono. Treatment often includes treating the symptoms and getting plenty of rest. Otherwise, mono usually goes away by itself.