<human>:  I have a question about the Epstein-Barr Virus. How many different types of EBV are there?
<bot>: There are two main types of EBV, Epstein-Barr virus type 1 and type 2. EBV type 1 is the most common type, and it is the type that causes infectious mononucleosis. EBV type 2 is less common, and it is the type that causes mononucleosis-like symptoms.