I could honestly care less what someone else does with their children. If I had a child with a compromised immune system, I highly doubt I would be letting them go around many kids anyway. My dad does his best to avoid public places..so why wouldn't I do the same for an immune compromised child?
I'm immune compromised (I take immune suppressing drugs to prevent a flare up of an auto immune disease), so is one of my work colleagues (she had an organ transplant so takes immune suppressing drugs to prevent rejection), but we're not actually sick so have to work to pay the bills.