
Over 95% of the world’s adult population is infected with Epstein–Barr virus (EBV), but most people never realise it. The infection often causes few symptoms and then stays in the body for life.
But for a small minority, EBV is linked to serious disease. For more than 50 years, EBV has been recognised as the first virus shown to contribute to certain cancers, and is therefore classified as a group one carcinogen.