I have never had the flu shot to my knowledge. However, my daughter received the flu mist last year when she was three. She became ill that day and was on the couch for about six months. I would have to carry her every where we went and finally on our second dr appt and after insisting on tests she was diagnosed with mono. She also got fifths disease and developed an intolerance to dairy, her favorite staple. I can't help but worry that this is the start of CFS for her. None of my children will ever receive another flu vaccination.