Krista – Spoke with vets office, more than likely the receptionist and she checked the cats file – Diphyllobuthriidan / Spirometria is the worm, a search of the all knowing internet has it as Fish Worm. Some horror stories out there, thankfully we have seen nothing come out of here and the only time she had diarrhea was one day right after the first dose of Cestex. Thoughts on what the next step should be, seems like we are catching the worm in different stages of its life cycle. Thanks.