What is mono Mon, Mar 15, 10 05:46PMTue, Jan 24, 23 09:06PM by roman Mono is also called mononucleosis. It is caused by Epstein Barr Virus. This is the virus that causes herpes disease. TAGS: 1. symptoms of mono 2. how do you get mono 3. how long does mono last 4. can you die from mono 5. pictures of mono