How do cats get toxoplasmosis? - briefly
Cats primarily contract toxoplasmosis through ingesting contaminated soil or feces containing Toxoplasma gondii oocysts, often from hunting and consuming infected prey such as birds or rodents. This parasite can also be transmitted through the placenta during pregnancy.
How do cats get toxoplasmosis? - in detail
Cats are the definitive host for Toxoplasma gondii, the parasite that causes toxoplasmosis. The life cycle of this protozoan involves multiple stages and hosts, which allow it to persist in the environment and transmit infection to various species, including cats and humans.
The primary means by which cats contract toxoplasmosis is through the consumption of infected prey or raw meat. Toxoplasma gondii undergoes sexual reproduction only within the intestines of felids (cats and other small wild felines). When a cat ingests an infected rodent, bird, or other small animal that harbors the parasite in its tissues, the cysts rupture in the cat's intestine. This triggers the release of oocysts, which are then excreted in the cat's feces.
These oocysts are highly resistant to environmental conditions and can remain infective in soil for up to 18 months. Humans and other animals can become infected by accidentally ingesting these oocysts, typically through contaminated food or water, or by handling soil that contains the parasite.
Additionally, cats can contract toxoplasmosis vertically from their mothers if the mother is shedding oocysts during pregnancy. Kittens may also ingest infected milk, which can lead to infection. However, these routes of transmission are less common than those involving the consumption of infected prey or raw meat.
It's important to note that cats typically do not show symptoms of toxoplasmosis, even when they are actively shedding oocysts. This makes them efficient carriers and spreaders of the parasite, contributing significantly to its environmental presence and transmission to other species.
Proper hygiene practices, such as regularly cleaning litter boxes, cooking meat thoroughly, and avoiding contact with cat feces, can help prevent the spread of Toxoplasma gondii and reduce the risk of infection in both cats and humans.