Epstein-Barr virus (EBV), also known as human herpesvirus 4, is a member of the herpes virus family. It is one of the most common human viruses. EBV is found all over the world. Most people get infected with EBV at some point in their lives. EBV spreads most commonly through bodily fluids, primarily saliva. EBV can cause infectious mononucleosis, also called mono, and other illnesses.
source: https://www.cdc.gov/epstein-barr/about-ebv.html
EBV may be a leading cause of multiple sclerosis.
source: https://www.nature.com/articles/s41582-023-00775-5
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