This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
As per WHO, leprosy is a public health problem if prevalence is - 
Select and explain. 
A. 0.10%, B. 0.01%, C. 0.50%, D. 1%
B: 0.01%
Answer: B: 0.01% 
Explanation: <p> As per WHO , leprosy is a public health problem if prevalence is >0.01%. Reference:Park&;s textbook of preventive and social medicine,K.Park,23rd edition,page no:315. <\p>