Dawn, I know of one person who claims to have had his immune system wiped out who posts over at braintalk, I must have missed the other one that Phirex is talking about.
I followed the story of the one I know of during the time he was getting infected. He had a very strange habit of injecting copaxone while sitting in a warm bath. He felt it reduced the site reactions.
As I remember the doctors blamed his problems on doing the injections while sitting in a puddle of his own filth. This is something he now fails to mention.
Best of luck, Peter