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
The mass treatment of trachoma is undeaken if the prevalence in community is - 
Select and explain. 
A. 3%, B. 10%, C. 5%, D. 6%
B: 10%
Answer: B: 10% 
Explanation: <p> Indication of mass treatment in trachoma:>10% prevalence of severe and moderate trachoma in children <10 years of age( NEW GUIDELINES-WHO). Reference:Park&;s textbook of preventive and social medicine,K.Park,23rd edition,page no:309. <\p>