True about montoux is -: (A) False negative in fulminant diseases, (B) If once done, next time it is always positive, (C) Results are given in terms of positive & negative, (D) Indurations given in terms of length & breadth
Answer is A. Ans. is 'a' i.e., False negative in fulminant disease . A positive tuberculin test indicates hypersensitivity to tuberculoprotein, it may be due to : - Active infection - Subclinical infection - Past infection - BCG vaccination . In overwhelming tuberculosis (fulminant cases) due to depressed cellular immunity montoux test may be false negative.