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Effect of gamma globulin infusion on type-specific pneumococcal antibody levels in splenectomized adults.

Using an ELISA technique, changes in specific antibody levels against pneumococcal serotypes 1, 4, 7F, 14, 18C and 23F were studied in 8 adults healthy at the time of investigation but splenectomized previously because of hematological disease following infusion of 200 mg/kg body weight of a commercially available immunoglobulin preparation for intravenous use (Sandoglobulin). Among the 4 patients with initially low serum levels of antipneumococcal antibodies, significantly raised antibody levels were demonstrated against type 14 for 8 weeks. On the other hand, the infusion did not lead to increased antibody levels in 3 patients with high preinfusion values for antipneumococcal antibodies. In contrast, a significantly lower antibody value for type 7F was recorded 3 weeks after infusion. Efficacy of immunoglobulin prophylaxis is, therefore, probably doubtful in certain splenectomized patients, and if contemplated should be preceded by analysis of antibody levels against common pathogens.