Blood-transfusion in group-B streptococcal sepsis.

Transfusion of fresh whole blood was evaluated as a means of supplying opsonins and lessening the high mortality of group-B streptococcal sepsis in neonates. Pre-transfusion and post-transfusion sera from 22 infants were examined for the presence of opsonins against group-B organisms. Opsonic activity rose only when donor blood containing heat-stable antibody was administered in high volume (greater than 40% of blood-volume). 9 of 9 infants transfused with blood containing antibody to their infecting strain survived septic episodes. 3 of 6 who received blood lacking antibody to their infecting strain died.