Mulattoes, octoroons and quadroons are much more susceptible to the ravages of syphilis and gonorrhea than are their more deeply tinted brethren.

Mulattoes, octoroons and quadroons are much more susceptible to the ravages of syphilis and gonorrhea than are their more deeply tinted brethren. Negroes of all shades are extremely susceptible to tuberculosis, and also to measles. In my experience extending over a period of nearly twenty years, I do not recall having seen a case of scarlet fever, diphtheria, mumps or tonsillitis in black negroes, and since beginning this paper I have made inquiries of all the physicians with whom I have come in contact and have received practically the same answer as to the immunity of the pure-blooded negro from these diseases.

H. M. Folkes, M.D., “The Negro as a Health Problem,” The Journal of the American Medical Association, Volume 55, Number 11 (1910): 1246-1247.

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