SPECIFICITY OF SKIN REACTIONS OF HUMANS TO NOCARDIA SENSITINS

Abstract
Nocardia brasilliensis sensitin (0.2 [gamma] ) elicited large reactions In 14 patients with mycetoma caused by that microorganism and negative reactions ([less than or equal 6 mm) In a group of healthy adults and in patients with various other diseases, including tuberculosis. A 10 times larger dose of the same preparation gave positive reactions (presumably cross reaction) in a few tuberculin-positive persons. N. asteroldes sensitln (0.2 [gamma] ) gave a reaction of 9 mm in 1 of the 14 patients with mycetoma and in 1 tuberculin-positive person, and a 10 times larger dose gave fairly large reactions (presumably all cross reactions) in a large number of tuberculin-positive persons. No persons known to be infected with N. asteroldes were tested.