A survey of the Rh problem in mixed racial group

Abstract

<h2>Summary</h2> Three thousand eleven pregnancieswere followed from presentation to post-partum period, for determination of the incidences of Rh negativity and of hemolytic disease of the newborn. Rh testing and adequate diagnostic measures applied to the offspring of these mothers were employed. In this group, a mixed white, Negro, and Puerto Rican group, accurate figures on the incidence of Rh negativity were obtained. Only nine cases of hemolytic disease were detected, of which two were stillbirths. The latter were the only deaths.