Diabetes Type 2 Support Group
Type 2 Diabetes is a condition in which the body either does not produce enough insulin or does not make efficient use of it. Insulin is a hormone needed to convert food into glucose, a sugar that the body uses for energy. Without enough insulin, glucose can accumulate in the blood, and can cause serious health problems such as heart disease and strokes and organ damage...

Anyhow, sorry, that is terrible. Did the Doc put you on insulin to get your numbers down? MRSA is hard to get rid of so work close with your Doctor to get well. Again, I am so sorry.
http://www.staph-infection-resources.com/3/mrsa-treatment-success-stories.html
But , did the IV therapy do that. Was it full of sugar.
That AIC is very serious.
Get back on track with low carbs and exercise but AIC will not change over night.
Good luck