Are There Any DANGERS for People with an Immune Disorders Working in a Hospital ?

It is my opinion that it would be inadvisable for the obvious reason that you simply cant build an immunity tolerance that people without a disorder will build over time. The risk of constantly being exposed to sick people( VRE MRSA C-Diff etc) could prove absolutely devastating and compromise the immune system even further ? But perhaps I am wrong, which is why I would like to get some more opinions.