ITEM: Another major cause of disease transmission is the movement of electronic equipment between patients. This includes the laptop computer many doctors carry with them from room to room. There is no good way to clean keyboards of micro-organisms.
You can use almost any disinfectant to effectively clean hospital keyboards, according to this study.
Tablets meant for medical use, are advertised as complying with standards for protection against foreign dust/liquid ingress, so that they can be quickly decontaminated... especially if bodily fluids get on them.
As far as the iPhone went, Apple didn't protect against ingress, but instead put moisture detectors. A tablet would probably not have special protection either.