I think I heard from someone that their might be a bloodtest for it, but I'm not sure. Encysted worms do not show up on fecals, which is where my problem started. He's been on a regular rotational deworming schedule, with regular fecals and all his fecals have come back clear. He's been on antibiotics for 4 weeks now, and the vet thinks that this caused all the encysted worms to open up all at once (or a bunch of them anyways). On sunday, I found thousands of live worms in a pile of runny poo he had that morning, which is what told us he had an infestation (it was gross!). All poo is picked out of his stall and paddock every day, as I'm trying to prevent re-infestation.
Thank you for the information on the runny poo! I'm make sure to immediately call the vet if I see one. His poo has been normal since that one episode on sunday.
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