My indoor cat threw up a worm after deworming. Should I re-deworm?

Question

We took in a stray and gave him dewormer. Worms were found in his poop after that dose. We repeated it two weeks later as recommended. Found no worms. Two weeks after that he just threw up a worm and he's been indoors since we got him. Do I redo the dewormer? Pet's info: Cat | Mixed Breed | Male | unneutered

Angel Alvarado, LVT · Accepted Answer

Submit the worm and a stool sample to your veterinarian to identify the specific parasite. You may need to repeat the deworming and then use a monthly preventative. The dewormer likely did not clear all the parasites, since it only affects the parasites at a certain stage in its lifecycle.

My indoor cat threw up a worm after deworming. Should I re-deworm?

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