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
Application of incubation period is all except 
Select and explain. 
A. To differentiate primary case from secondary cases, B. To prevent infection to the contacts of the infected person, C. To find out time for quarantine, D. To find out time for isolation
D: To find out time for isolation
Answer: D: To find out time for isolation 
Explanation: None