Rubella IgG details

This antibody indicates immunity to rubella (German measles), whether from a past infection or vaccination (typically the MMR vaccine). Rubella is usually a mild illness, but infection during early pregnancy can cause serious birth defects (congenital rubella syndrome), which is why rubella immunity is a standard part of prenatal screening — if a pregnant woman isn't immune, extra precautions are taken to avoid exposure during pregnancy, and vaccination is typically recommended afterward, since the vaccine itself isn't given during pregnancy.