. . "Toxoplasmosis is a disease caused by the intracellular protozoan parasite Toxoplasma gondii. 1 Most immunocompetent individuals who contract the parasite do not develop symptoms, or might experience nonspecific flulike symptoms including fever, headache, muscle pain, and lymphadenopathy. 2-4 Although one-third of the world's population is infected with the parasite, it often remains unrecognized," . .