Incidence of the Rh factor in Indians.

LEVINE1 has shown that the incidence of erythroblastosis fA"talis in any race is directly proportional to the frequency of negative reactions with anti-Rh0 serum. Racial differences in the incidence of Rh agglutinogen have already been described, and clinical observations have confirmed the existence of a close correlation between the distribution of the Rh factor and the frequency of haemolytic disease of the newborn.