| risk factors for toxoplasma gondii infection in pregnancy. results of a prospective case-control study in norway. | from 1992 to 1994, a prospective case-control study designed to identify preventable risk factors for toxoplasma gondii infection in pregnancy was conducted in norway. case-patients were identified through a serologic screening program encompassing 37,000 pregnant women and through sporadic antenatal testing for toxoplasma infection. a total of 63 pregnant women with serologic evidence of recent primary t. gondii infection and 128 seronegative control women matched by age, stage of pregnancy, ex ... | 1996 | 8712198 |