The association of blood groups, ABH secretion, haptoglobins and hemoglobins with filariasis.

Results on 605 patients and 597 controls carefully matched in relation to sex, age, marital status and profession are reported. A higher frequency of nonsecretors, as well as an excess of B and lack of A2 were observed among the filarial patients. Since these differences do not occur in other series, however, their significance is doubtful.