<prompt> True about toxoplasmosis is all except -In adults toxoplasmosis is usually asymptomaticIgG Abs are diagnostic in congenital toxoplasmosisDefinitive host is catEncephalitis is rare in immunocompetent individuals  <response>: CONGENITAL TOXOPLASMOSIS:.Diagnosis: IgM detection in fetal blood, IgA can also be used experimental but better sensitivity and Toxoplasma Ag in amniotic fluid, PCR to detect Toxoplasma genes. TOXOPLASMA GONDII: Three morphological forms: Sporulated oocyst, crescentic tachyzoites, tissue cyst containing bradyzoites Infective form: All three morphological forms are infectious Definitive hosts are cat and other felines Intermediate hosts are man and other mammals goat, sheep clinical feature:-In adults toxoplasmosis is usually asymptomatic. Encephalitis is rare in immunocompetent individuals and common in immunocompromised patients 