Mycobacteria of veterinary interest Production and potency of PPDs Mycobacterium phlei and Mycobacterium fortuitum isolated soils from La Pampa-Argentina

The Non-Tuberculous Mycobacteria (NTM),whose habitat the environment has acquired importance in the last years because of the immunosupressed patients, infected HIV ,and also in develop countries that have managed to eradicated the bovine tuberculosis. Where it has been verified that certain NTM interfere in the diagnosis of tuberculosis when it is applied to the delayed hypersensitivity test with purified protein derivative (PPD) tuberculin from Mycobacterium bovis. In the works to field exists controversy about the relevance of these environmental mycobacteria when control and eradication of animal tuberculosis are applied.The production of PPDs from the isolated soils from the province of La Pampa and the verification of the possible crossed reaction with bovine tuberculin PPD, prescribed test for international trade.