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
International ceificate for travelling is required for - 
Select and explain. 
A. Peussis, B. Yellow fever, C. Cholera, D. Plague
B: Yellow fever
Answer: B: Yellow fever 
Explanation: - measures designed to restrict the spread of yellow fever are specified in the International Health Regulations of WHO. - all travelling exposed to risk of yellow fever or passing through endemic zones of yellow fever must posses a valid international ceificate against yellow fever before they are allowed to enter yellow fever receptive areas. Reference : Park's textbook of preventive and social medicine, 23rd edition pg no:283 <\p>