Under the National Leprosy Elimination Programme, mass survey for leprosy is done if prevalence of leprosy is more than:: (A) 1/1000, (B) 5/1000, (C) 10/1000, (D) 20/1000
Answer is C. Under the NLEP, mass surveys are carried out by house to house surveys if prevalence of leprosy is>10/1000. In mass surveys, not less than 95% of the population should be covered. Ref: Park 21st edition, page 295.