How is mononucleosis passed down?

Infectious mononucleosis is typically transmitted through contact with infected saliva, also known as the "kissing disease." The virus responsible for mononucleosis, Epstein-Barr virus (EBV), is commonly spread through the exchange of bodily fluids, such as kissing, sharing drinks or eating utensils, or contact with an infected person's saliva through coughs or sneezes. The virus can also be transmitted through blood transfusions or organ transplants, but these cases are less common.

EBV is a highly contagious virus, but not everyone who comes into contact with it will develop mononucleosis. Some individuals may have an asymptomatic infection, meaning they carry the virus without experiencing noticeable symptoms. After the initial infection, the virus can remain dormant in the body and reactivate under certain conditions, such as immune system suppression.