We examined 785 placentas, including 51 from documented cases of congenital toxoplasmosis. Toxoplasma was detected in 16 placentas, including 1 in which congenital toxoplasmosis was ruled out. Placental screening had poor sensitivity (25%) but good specificity (99%), positive predictive value (93%), and negative predictive value (95%).
From the Institut de Parasitologie et de Pathologie Tropicale, les Hôpitaux Universitaires de Strasbourg et Université de Strasbourg, Strasbourg, France.
Accepted for publication February 2, 2010.
The authors D. F. and V. C. contributed equally to this work.
Address for correspondence: Denis Filisetti, MD, PhD, Laboratoire de Parasitologie et Mycologie Médicale, Les Hôpitaux Universitaires de Strasbourg, 3 rue Kœberlé, F-67000 Strasbourg, France. E-mail: firstname.lastname@example.org.