I really need to know how long mono stays

Awhile: Virus has incubation period of approximately four to six weeks. Signs and symptoms such as fever and sore throat usually lessen within a couple of weeks, although fatigue, enlarged lymph nodes and a swollen spleen may last for a few weeks longer.If develop acute left upper quadrant pain, should contact physician immediately could represent a ruptured spleen.

Forever: The virus may stay in the body forever as do some other viruses like the chickenpox virus. Most of those infected with the virus will actively shed the germ in saliva for 3-4 weeks while a few do for 3 months. Some will occasionally transiently shed the virus in saliva on and off for many years.Symptoms rarely remain after the first 3 wk-3m period.Chronic fatigue is not caused by mono. (cdc).