Positive tuberculin test means?: (A) Resistance to TB, (B) Susceptibility to TB, (C) Hypersensitivity, (D) None of the above
Answer is C. Ans. is 'c' i.e., Hypersensitivity 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.