I have a 12yr. old niece with cystic fibrosis. She has had Methicillin-Resistant Staphylococcus Aureus (MRSA). Luckily in the last year she has tested negative for it. But any time she had a cut, abrasion, moderate to severe bruising, etc., she had to use a special sanitizing gel to keep it from getting a severe infection. One of her older sisters passed away from CF when she was 9. But I don't remember her ever having MRSA.