This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
Early reaction of lepromin test is read at: 
Select and explain. 
A. 24 hours, B. 36 hours, C. 48 hours, D. 72 hours
C: 48 hours
Answer: C: 48 hours 
Explanation: Early reaction to lepromin test is known as Fernandez reaction. It is read after 48 hours of injecting lepromin. The reaction is a result of delayed hypersensitivity reaction to soluble constituents of the leprosy bacilli. Ref: Park 21st edition, page 294.