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Toxoplasmosis is a widespread parasitic disease and usually causes no symptoms.
However, infection of pregnant women may cause congenital infection, resulting potentially in mental retardation and blindness in the infant. The objective of this review was to assess whether or not treating toxoplasmosis in pregnancy reduces the risk of congenital toxoplasma infection and improves infant outcomes. The Cochrane Pregnancy and Childbirth Group trials register was searched. There was also contact with experts in the field, including those in the European Research Network on Congenital Toxoplasmosis. Screening is expensive, so we need to evaluate the effects of treatment, and the impact of screening programmes.