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Clindamycin, an antibiotic is used to treat Toxoplasma. Dewormers are not effective against this type of parasite.
Toxoplasma gondii is a protozoa. The definitive host is the cat, but it infects most species of warm blooded animals. The parasite (oocysts) goes through the wall of the intestines and invades tissue of infected animals. It encysts in the tissue and is transmitted to other animals and humans when the encysted form is eaten. Meat and raw milk (not exposure to cats) is the primary source of infection in humans.
Cats, as the definitive host, can pass oocysts in the feces. It takes the oocysts 1-5 days to become infective. This is important because if cat feces are removed from litter boxes promptly, they do not transmit Toxoplasma. Since your cat uses the toilet, there is no exposure to Toxoplasma from the cat. In addition, an infected cat only sheds oocysts for 2-3 weeks. After that, they are infectious only if someones eats the cat. Cats that have been infected develop antibodies against Toxoplasma. If they are positive, they are not likely to be reinfected and therefore will not shed oocysts in the feces.
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