The screening method of choice in area where the prevalence of leprosy is 1/1000 is -: (A) Contact survey, (B) Group survey, (C) Mass survey, (D) Any of the above
Answer is B. Contact survey is done in areas where prevalence of leprosy is generally low ie less than 1 case per 1000 population. Group survey when prevalence is 1 in 1000 Mass survey is done in hyperendemic area where prevalence is about 10 or more per 1000 population Reference; Park&;s Textbook of preventive and social medicine, 24th edition.Pg no. 339