This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Concept of health and disease, Subject name: Social & Preventive Medicine
International disease surveillance includes 
Select and explain. 
A. Hepatitis, B. Polio, C. TB, D. Leprosy
B: Polio
Answer: B: Polio 
Explanation: Diseases under WHO surveillance Polio Rabies Relapsing fever Influenza Salmonella Malaria Louse born typhus Ref : Park's Textbook of Preventive and Social Medicine; 24th edition