Abstract
Aspergillus fumigatus is an important agent of mycotic infection in cattle and a potent source of antigens. However, the efficacy of serological diagnosis of aspergillosis in cattle remains controversial. Corbel (1972) and Knudtson et al. (1974) considered a precipitin assay useful as a supplementary test in the diagnosis of mycotic abortion, whereas Wiseman et al. (1984) found the specificity too low to justify its routine use. We have studied 1) the antibody response to the catalase antigen of A. fumigatus in experimentally infected cattle and 2) the prevalence of catalase antibodies and A. fumigatus precipitins in healthy and diseased cattle. The aim was to ascertain how far detection of antibodies to a defined fungal antigen can contribute to the often difficult diagnosis of mycosis.
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