Toxoplasmosis infections are caused by a single-celled parasite known as toxoplasma gondii. The parasite can be found in cat feces and undercooked meat, especially lamb, venison, and pork. It can be transmitted through contaminated water and unpasteurized goat milk. Mother to child transmission and transmission during organ transplantation occur in rare cases.
Toxoplasmosis infections cause flu-like symptoms such body aches and pain that last for a month or more. Severe toxoplasmosis can cause brain, eye, or other organ damage.