Distribution of Blood Groups Among Syphilitic Abu Dhabians in the United Arab Emirates.

ABO and Rh blood groups among 54 syphilitics were determined. A significantly increased incidence of syphilis in persons blood groups B and AB was observed; significant decrease in those having groups A and 0. A significant decrease in, the incidence of syphilis was also observed in Rh negative 'subjects. These results suggest a possible relationship between the inheritance of blood groups and the natural defence mechanism against syphilis.