Is mononucleosis a serious virus to everybody?

Mononucleosis. Mononucleosis is caused by epsteinbarr virus (eb virus), it causes mononucleosis.If you get infected it can cause a mild disease and not so mild in others.
Variable. In childhood it tends to come and go without notable problems and may be ignored as a passing flu or virus.As a patient gets older, the symptoms are often more intense, with teens and adults may be bed ridden for weeks with the illness.It can also affect different body systems in different ways, such as producing a significant hepatitis in some but not others.