| seroprevalence of echinococcus granulosus infection in a uruguayan rural human population. | serological tests using hydatid cyst fluid (hcf) are useful as a primary screen for detecting asymptomatic infections due to echinococcus granulosus in human populations. an enzyme-linked immunosorbent assay (elisa) performed with whole sheep hcf was used to determine the prevalence of hydatid antibodies in a rural human population in uruguay. in order to eliminate cross-reactions with sheep proteins in hcf, 1% normal sheep serum was added to each human serum before testing. elisa seropositives ... | 1991 | 1801351 |