The problem is the number of patients and the amount of data that has to be entered into different systems means you would spend 90% of your time washing your hands or taking gloves on and off.
Imagine programming where everytime your hand went between the keyboard and mouse you had to go and wash your hands!
The problem is that adding more computers is always a 'good thing' - how can more info about a patient be bad?
Some keyboards have a squishy membrane cover which can be sprayed and scrubbed.
But, really, people need to wash their hands (soap and hot water) before they touch a patient.