Abstract
Investigation of 2522 newborn blood samples using the hemolysis-in-gel test showed lack of rubella-specific IgG antibodies in 236 cases. This indicates that 9.3% of mothers had no immunity against rubella. Inclusion of the test into existing newborn screening programs would permit selective immunizations in the lying-in period, discovery of rubella infections within the 1st months of pregnancy and epidemiological studies. Financial and organizational requirements would be minimal. A considerable improvement in current rubella prophylaxis could thus be achieved.