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Social & Preventive Medicine Communicable diseases c114f9f6

Which of the following is not true about the Tuberculin test -

A
It is only tool available for estimating the prevalence of TB in a community
B
Induration of 10 mm indicates a positive test
C
It is a specific test
D
New cases occur more commonly in patients who are tuberculin reactors
High-Yield Explanation
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

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