I am certain this is due to the fact that doctors, nurses and other hospital staff are not changing gloves moving from one patient to another. There was a study conducted years ago that doctors wash their hands 27% of the time going patient to patient, and nurses were like 42%.
Imagine with gloves on, I bet the numbers are lower because they falsely believe it is not necessary. Again, anyone end in the hospital, insist that all there change their gloves before touching you or anything in your room.