Just when I thought I'd heard it all, comes this little tidbit about the risk of immunosuppressed people contracting Encephalitozoon (once thought a protozoan but now considered a fungus, which is totally weird in and of itself) infection from rabbit urine.
Now I don't want a lot of panicked phone calls about this. The reality, as Dr. Weese points out, is that everyone should exercise good basic hygiene when handling rabbits and their waste products (and all other animals for that matter). Nobody needs to give up their rabbits or live in fear of them. Just be aware, and be clean.