...this is a problem based on overuse.
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But isn’t the lack of proper hygiene also a major factor?
No it is not a lack of hygeine. Bacteria is upiquitous. What has happened is these patients have received so much antibiotics that the CREB and CRAB have been selected. We are colonized with bacteria. SO there is isolation once these are diagnosed to prevent transfer from patient to patient with a health care vector, but that is pretty low probability. These are generally bugs that we are colonized with (everyone of us has C. Dif, MRSA, etc. etc) but the chronicall ill eventually have to little of an immune system to deal with this and thus become sick.