Rabbitears has a resistant strain of ascaris parasites. He/she has tried all sorts methods of removal with no avail. It could have come from a resistant strain of eggs from another infected person - #1 a person develops a resistant strain through incorrect use of herbs/drugs/alcohol/or chemicals #2 this person passes the resistant to other people - like our Rabbitears.
Cases like this are VERY VERY RARE. All that can be done is just to keep trying different methods of removal. Rabbitears is helping us ALL by letting us know what is and what isn't working.