An enzyme-labeled antibody test for detecting antibodies in chickens infected with Mycobacterium avium serotype 2.

An enzyme-labeled antibody test was used for detecting antibodies in serums from chickens infected experimentally with Mycobacterium avium serotype 2. Positive ELA reactions were observed in the serums of each of 8 chickens 2, 4, 6, and 8 weeks after infection; no reactions were observed in uninfected controls. Tuberculin skin tests did not induce positive ELA test reactions in uninfected chickens.