The bacteria alters them otherwise they could not complete life cycles inside us.
You find this note in Leishmania, there would be more but I didn't explore every one to this extend...might be more inside the Tapeworm scripts: //www.curezone.org/blogs/f.asp?f=2156
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Wolbachia: Simple division, one Amastigote into many Proboscis can be stopped by treating Wolbachia
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In short Wolbachia is a BioW to allow these worms inside us, yet still allows the other arm of the misdirection industry to say this couldn't happen because these worms can not complete their life cycle in the human body...