in the present study it is shown that the direct method as applied in mongolia does not cause any untoward reactions in persons who react to tuberculin and therefore can be considered a rational public health procedure.by reason of the repeated follow-up examinations , it was possible to obtain a clear picture of the development of the local bcg reactions and to test the hypothesis that these reactions may give information on pre-existing tuberculin sensitivity .
C0853813
local
C0443286
reactions