Re:
I personally love Crocs and similiar slide on rubber shoes. I wouldn't won't to wear the shoes with the holes in them, not due to all the stuff your feet come in contact with while at work. It would really depend on where you worked. And if you do wear them I would just make sure you took off your socks/shoes as soon as you got home and not wear them all over your house. With all the germs/virus/etc, I wouldn't take any chances not when it comes to possibly exposing my children to something.
FYI there are other makers of croc type shoes that are just as comfortable or more so than crocs and are cheapier (walmart is not a good example). So I would look around before spending $30 to $40 or more on a rubber shoe which came from China and costs less than a dollar or two to make.

Hope this was a little helpful and best wishes.

I don't think crocks are safe to wear when providing direct care. The risk of exposure is to high with the holes and not to mention the lack of support. I wore out a pair in 2 months.