[Frequency of latent connatal Toxoplasma gondii infection in children and their development].

The incidence and clinical symptoms of Toxoplasma gondii-primoinfection during pregnancy are ascertained basing on a prospective survey comprising 1,697 gravid women. The rate of the first infection during pregnancy was 7.6%, the connatal infection rate 5.6%, the premature birth rate in connatal infection 44%. In cases of connatal infection which were proved serologically with SFT and CFT, the development of the children was followed up to the age of 9 and 10 years.