Here is what I think is happening. All humans have this bacterial growing in or on their skin. Only the sick, young, and recently operated on are getting this infection. Your not the person that needs to worry your patient is, you can be a carrier and not know it, get tested. As far as the young imagane growing a billion new cells every week and only eating nuggets, chips and soda pop. they are all malnurished and their systems are stressed, they are also the breeding ground for all of these new killer bugs, think fresh food and dirty fingers. like mini petri dishes. Now for the old and sick pretty obvious why they are supceptiable nothing against old peolpe but they have been eating an american diet and not exercising for 75-80 years not a profile of good health. Well there you have it bad nutrition followed by feeding germs a diet of fresh cells and eliminating the week germs using antibiotics. Think how healthy humans would be if we only saved the strongest ones that were resistant to everything known to nature.