It took the doctors weeks to figure out that's what he had. They didn't figure out why it killed him until the autopsy. In addition to type 2 diabetes, apparently he'd had cirrhosis of the liver (due to his weight) for the last 10-15 years. This compromised his immune system to the point that he couldn't resist it and it infected all of his sytems. He was on a respirator for his last month because it got into his lungs. If the Bartonella's (cat scratch fever) hadn't gotten to his brain, he still would have had brain damage from lack of oxygen.