Yes beta cells killed by the immune system is Type I.
At http://www.janacare.com/, we are using technology to help this process.
Any given sickness can have catastrophic effects as well. When I have a flu, I usually check myself into the hospital for monitoring. Blood sugar fluctuates hard, and its difficult to keep food down. My dad's best friend died from exactly this, a normal flu that disrupted eating patterns.
Literally ANY mistake can be life threatening. Over the last year I have been required emergency care twice due to low blood sugars. I would pay anything, do anything to have this go away.