[Drop method for the complement fixation test to exclude blood donors with Chagas' disease].
D001782:Blood Donors; D014355:Chagas Disease; D003168:Complement Fixation Tests; D006630:Hispanic or Latino; D006801:Humans; D014352:Trypanosomiasis; D014481:United States
BLOOD DONORS; COMPLEMENT FIXATION TESTS; TRYPANOSOMIASIS, SOUTH AMERICAN