I had mononucleosis at the age of 15. I am currently 31. I also get a cold or flu at least once a month. I am currently fighting my second virus for the month of October. I feel tired and fatigued most of the time, though not bed-ridden. My health definitely limits my choices in life. I do not feel that I can work full time, I avoid large crowds and settings where they may be lots of germs- i.e. daycares, schools, hospitals, etc. It is becoming progressively worse as I get older and I cannot seem to contribute it to anything else. My mother insists that this began after my bout with mononucleosis. Does anyone know any more about this?