| immunodiagnosis of human dirofilariasis in puerto rico. | a seroepidemiologic study was carried out in humans inhabiting southeastern puerto rico, the area on this island with highest prevalence of canine heartworm, to detect the presence of antibodies to dirofilaria immitis. three hundred serum samples were analyzed by enzyme-linked immunosorbent assay (elisa) using somatic antigens of the adult worm. serum samples from eight patients were positive for anti-dirofilarial igg. these patients had a mean age of 54 years. although the study population had ... | 1993 | 8480862 |