The skin reactions of patients with leprosy to the intradermal inoculation of mycobacterial antigens

Forty-eight patients with leprosy were injected intradermally with lepromin, tuberculin and antigens prepared from B.C.G., M. fortuitum, M. rhodocrous, M. marinum, M. phlei and M. smegmatis.

There was no correlation between the reactions to lepromin and the reactions to any other antigens.

The reactions to tuberculin were significantly correlated with the reactions to M. marinum both at 72 hours and when the reactions at 72 hours to tuberculin were compared with the reactions at 21 days to M. marinum.