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
[{'content': 'Case notification under international health regulations is done for which of the following: September 2009 \nSelect and explain. \nA. Hepatitis B, B. HIV, C. Yellow fever, D. All of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C: Yellow fever', 'role': 'assistant'}]