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Congenital toxoplasmosis: Clinical features and diagnosis

Nicholas G Guerina, MD, PhD
Lucila Marquez, MD, MPH
Section Editors
Sheldon L Kaplan, MD
Leonard E Weisman, MD
Deputy Editor
Carrie Armsby, MD, MPH


Toxoplasma gondii is a ubiquitous protozoan parasite that infects animals and humans. Toxoplasma infection typically is asymptomatic in immunocompetent hosts. However, serious disease can occur, most frequently in the setting of immunosuppression or congenital infection. The fetus, newborn, and young infant with congenital Toxoplasma infection are at risk of infection-associated complications, particularly retinal disease that can occur into adulthood.

The clinical features and diagnosis of congenital toxoplasmosis will be reviewed here. The treatment, outcome, and prevention of congenital toxoplasmosis are discussed separately. (See "Congenital toxoplasmosis: Treatment, outcome, and prevention".)

Toxoplasmosis in other patient populations is discussed in separate topic reviews:

Pregnancy (see "Toxoplasmosis and pregnancy")


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Literature review current through: Nov 2017. | This topic last updated: Oct 20, 2017.
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