When was mono discovered?

Mononucleosis, commonly known as "mono," was first identified in 1920 when Dr. Michael Epstein and Dr. Yvonne Barr discovered the Epstein-Barr virus (EBV), which is one of the main causes of the disease. The term "infectious mononucleosis" was later coined in the 1930s. The virus itself was isolated in 1964, furthering the understanding of the disease.