Toxoplasmosis is usually spread by eating poorly cooked food that contains cysts, exposure to infected cat feces, and from a mother to a child during pregnancy if the mother becomes infected.[3] Rarely, the disease may be spread by blood transfusion.[3] It is not otherwise spread between people.[3] The parasite is only known to reproduce sexually in the cat family.[8] However, it can infect most types of warm-blooded animals, including humans.[8] Diagnosis is typically by testing blood for antibodies or by testing amniotic fluid for the parasite's DNA.[4]