Which of the following is not true about the Tuberculin test -
The validity of tuberculin test is subject to variability. It is limited by lack of specificity Reference; Park&;s Textbook of preventive and social medicine, 24th edition.Pg no. 196
It is only tool available for estimating the prevalence of TB in a community
Induration of 10 mm indicates a positive test
It is a specific test
New cases occur more commonly in patients who are tuberculin reactors
Communicable diseases