Evaluation of the slide-latex agglutination and intradermal (Casoni) tests for echinococcosis.

Fifty-one patients with surgically proven hydatid disease were examined with the intradermal (ID) (Casoni) and latex-agglutination (LA) tests. Before surgery, results of the former test were 80.4% positive and of the latter were 82.3%. For 105 persons who were diagnosed free of hydatid cysts by surgical, clinical and serological observations, 6.7% were positive with the ID test and 4.8% with the LA test. The close agreement between results obtained with the LA and ID tests in this selected group of patients suggests that the LA test merits further evaluation as a diagnostic tool.