How does one get klebsiella bacteria if they are not in a healthcare setting? also, can it seriously alter a personality/behaviors?

Normal in intestine: Klebsiella is a normal bacteria in the intestine; many people carry it all the time. When people get infections from Klebsiella -- such as urinary tract infection or pneumonia -- it's usually from the normal bacteria already in their intestines. It does not alter personality of behavior.

Person to person: Usually healthy people don’t get Klebsiella infections. Person to person transmission may occur. Altered mental status can occur w Klebsiella pneumonia (bacteria enter through respiratory tract). In some cases infections have led to meningitis or cerebritis. In the later cases bacteria may have been spread through the blood or may directly enter the brain (i.e. trauma or neurosurgery