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
Quarantine period for yellow fever is: September 2005 
Select and explain. 
A. 1 day, B. 2 days, C. 6 days, D. 10 days
C: 6 days
Answer: C: 6 days 
Explanation: Ans. C: 6 days All travelers exposed to the risk of yellow-fever or passing through endemic zones of yellow fever must possess a valid international ceificate of vaccination against yellow fever before they are allowed to enter yellow fever "receptive "areas. If no such ceificate is available, the traveler is placed on quarantine, in a mosquito proof ward, for 6 days from date of leaving an infected area.