[Approaches to determining the extent of tetanus immunity using an immunoenzyme method].

The immunological survey of 3435 cattle-breeders of the Rostov region was carried out with the use of the enzyme immunoassay (EIA). The survey made it possible not only to establish the intensity of collective anti-tetanus immunity, but also to evaluate the quality of immunization. Among subjects with the known history of immunization the protective antitoxic titer was detected in 96.

The ability of maternal antibody to increase the immune response in infants.

There is a relationship between the titre of antibody in cord blood to , diphtheria and tetanus antigens, and the antibody response of the babies to —diphtheria—tetanus vaccine. The response to this vaccine was greater in babies with antibodies in the cord blood.