Toxoplasmosis is a parasitic disease caused by the Toxoplasma gondii protozoan. This disease can be transmitted through ingestion of contaminated food or water, or by contact with infected cat feces. Synonyms for toxoplasmosis include the following: cat-scratch disease, toxoplasma infection, blood poisoning, cat scratch fever, chorioretinitis, toxoplasmosis encephalitis, and lymphadenopathy. While most people with a healthy immune system may not experience any symptoms, those with weakened immune systems or pregnant women may experience severe symptoms or complications. It's important to take steps to prevent this disease, such as washing your hands frequently, cooking meat thoroughly, and avoiding contact with cat feces.