>"...have been warning us for decades and nobody cared to listen."
Actually, lots and lots and lots of people listened and acted. But it was not enough and too late. For many years, good physicians have been restricting antibiotic use and there has been a huge educational push telling people they MUST take all their antibiotics, exactly as prescribed. And healthcare facilities have been using all kinds of new techniques to hold down infections and transmission- silver, UV light sterilizers, better cleaning techniques, ozone generators, along with screaming about universal precautions and other education.
One of the main problems has been the lack of development of new antibiotics. We rested on our laurels for too many years while the bacteria have not (and evolved). This is a problem that won't just go away, we have to continuously develop new medications.... but until it is profitable, drug companies aren't interested. They would rather pour their money in high-dollar-return crap like Viagra.