Congenital toxoplasmosis: a serologic screening of 963 mothers and their children at birth.

An investigation carried out according to a predetermined serologic screening sought to evaluate the prevalence, level, and quality of fluorescent anti-Toxoplasma antibodies in a population sample of a certain district. The most important issues concern the risk of congenital toxoplasmosis for the above-mentioned subjects, the level of serotiter for expected risk, and the features of our screening protocol as regards thoroughness and the possibility of early diagnosis.