my son is 9 and my daughter is 12. they were both dx with mono this week. they are feeling ok except some fatigue and a headache . i have been told they cannot finish out their baseball and softball seasons b/c of the risk of contact to the spleen . if they wear a protective, under armour, shirt under uniform, can they play if they feel up to it? and what about participating in a field trip with their class to a water park. should they participate is the rides?