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 was originally introduced as a protection against 
Select and explain. 
A. Plague, B. Tuberculosis, C. AIDS, D. Malaria
A: Plague
Answer: A: Plague 
Explanation: In 14th century ‘quarantine’ was introduced in Europe to protect against importation of Plague
Ships, crews, travelers were detained for a ‘40 day period’