[Use of an immunoenzyme method for research on antichlamydial sera].

Data on comparative studies of the sensitivity of enzyme-linked immunosorbent assay (ELISA), complement fixation test (CFT), and indirect immunofluorescence test (IIFT) in titration of antibodies to chlamydial agents of calf enteritis and pneumonia in sera of immunized rabbits are presented. The data indicate that ELISA is 10-40 times more sensitive than CFT and IIFT and may be used for large-scale diagnostic studies in chlamydial infections of cattle.