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October 8, 1910


JAMA. 1910;55(15):1290-1291. doi:10.1001/jama.1910.04330150050018

CULTIVATION OF THE LEPROSY BACILLUS  Although it is now nearly forty years since Hansen discovered in leprous tissues the small rods which are now universally conceded to be the cause of leprosy, yet the cultivation of this bacillus has been an unattainable goal for the bacteriologist. On a number of occasions successful results have been reported, but none of these claims has been aecepted, although it has always seemed possible that in this respect injustice may have been done, since it has not hitherto been impossible to prove the identity of any suspected acid-fast bacillus as B. lepræ because there was no known susceptible animal on which its pathogenicity could be tested.Two recent achievements in this problem have overcome some of the greatest obstacles, and taking advantage of them Duval1 of New Orleans has succeeded, he believes, in securing pure cultures of the leprosy bacillus. The first of