My daughter is 9 1/2 and has just been diagnosed with mono for the second time. She had it three years ago and now again. Someone said it wasn't possible for her to have it again. After reading online, I am afraid there is some underlying reason for this positive monospot.She is typically a healthy active little girl. She has had her tonsils out (as of last year), but I thought this visit to the Dr. was going to give a positive strep result. She has dizziness, headache, very sore throat and her glands in her neck are swollen. She is somewhat sluggish, but not what I would expect with mono. Her blood counts all came back in the normal range. I am just worried about her. Any thoughts or suggestions would be very helpful!