I find this interesting because I came across an article about the same thing happening in the states with the bacteria Clostridium difficile. (I was going to publish it but got side-tracked by an infectious parasitic Troll.) The only difference is that there doesn't seem to be much action taking place in the States on this problem. Here's the article link:
"Diarrhea bacteria can lurk quietly in some
Patients may not show symptoms of common, sometimes fatal infection"