High IgG antibodies to Toxoplasma gondii in pregnancy indicate that there has been a previous infection with Toxoplasma gondii or that there is a possibility of infection with Toxoplasma gondii now. Previous infections usually have no effect on the fetus, ongoing infections may lead to fetal malformations and require close monitoring, and are usually more serious.
Toxoplasma gondii infection is a parasitic disease and infection during pregnancy may lead to fetal malformations. High IgG antibodies to Toxoplasma gondii indicate a previous or current Toxoplasma gondii infection and need to be combined with IgM antibodies.
1. Previous infection: High IgG antibody against Toxoplasma gondii is positive, but IgM antibody is negative, suggesting previous infection, which has no effect on the fetus and does not require intervention.
2. Ongoing infection: Toxoplasma gondii IgG antibody is elevated and positive, and IgM antibody is positive at the same time, suggesting current Toxoplasma gondii infection, which may cause miscarriage, preterm labor, fetal deformity or even stillbirth, and other adverse consequences, and should be actively treated at this time.