#90858
http://en.wikipedia.org/wiki/Helminthic_therapy
"Helminthic therapy is the treatment of autoimmune diseases and immunological disorders by means of deliberate infection with a helminth or with the ova of a helminth. Helminthis are parasitic worms, or nematodes, such as hookworms. Helminthic therapy is currently being studied as a promising treatment for several (non-viral) auto-immune diseases including Crohn's disease,[1][2][3] Multiple Sclerosis,[4] asthma,[5][6] and Ulcerative colitis.[7]...
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For use as a therapeutic agent, the specific helminth should meet all the following minimum requirements:
The Helminth should not have the potential to cause disease in man at therapeutic doses
The Helminth should not be able to reproduce in a host, thus allowing control of dose
The Helminth should not be a potential vector for other parasites, viruses, or bacteria
The Helminth should not be easily transmissible from the host to other people
The Helminth should be compatible with a patients existing medication
The Helminth should have a significant period of residence in the host
The Helminth must be easily eradicated from the host, if required"...