I think we can blame the over prescribing of antibiotics on that and other related issues getting "worse"...

My doctor has told me that for strep throat antibiotics don't make it heal but maybe a day or two before if you just let your "body" handle it. Of coarse if it doesn't handle it properly you can get pneumonia so that's their fear... better handle it prevent something a little worse and then however many years later and people can barely fight strep themselves.