True about Mantoux test -
<p> The result of tuberculin test is read after 48-96 hours but 72 hours (3rd day) is the ideal. Tuberculin reaction consists of erythema and induration.reaction exceeding 10 mm are considered &;positive&;. Park&;s textbook of preventive and social medicine,K.Park,23rd edition,page no:185 <\p>
<5 cm always +ve
Usually -ve after treatment
Positive reacion in children <2 yrs is not impoant than adult
Usually read after 48-72 hours
Communicable diseases