Toxoplasmosis is a common infection in people, birds, and animals that often is not noticed or may cause mild flu-like symptoms. But the infection can cause problems for a fetus (when the mother becomes infected) and for people who have weakened immune systems.
Human infection usually happens when a person eats food that contains the toxoplasmosis parasite, such as undercooked meat from an infected animal. You also can get infected by touching an infected cat or its feces. Most people develop an immunity during the 2 months after the infection.
WebMD Medical Reference from Healthwise