As far as I could decipher (not medically minded at all!) it seems that it is pretty hard to get rid of, and usually has to be treated with several strong antibiotics, I know when I was infected with it I was ill for quite a while before it was cleared in hospital. I don't really understand the molecule mimicry bit, but, when I searched google on this it seems to say that the bacteria can mimic certain genes, HLA B27 being one of them. If you find out anything else let us know!!!