Keep doing coloncleanses and liverflushing. According to Ask Andreas Moritz they live in dirty areas of the body. I never do parasite cleansing. In the beginning I saw liverflukes twice during the liverflush and never again.
According to him the parasites happen mainly because of poor digestion. For every one you kill you will have a new one the next day. I know that is not what you usually read. If interested there is a explanation in his book Timeless Secrets for Health and Rejuvenationhttp://www.ener-chi.com
If you keep an eye on his forum may be you can put your question there. He will only open for a few hours since people are waiting to get their messages on. May be he will give a better explanation, his book is copyrighted so I mainly use the information from his forum.