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
Which disease comes under international surveillance - 
Select and explain. 
A. Typhoid fever, B. Salmonellosis, C. Chikungunya fever, D. Hepatitis B
B: Salmonellosis
Answer: B: Salmonellosis 
Explanation: Ans. is 'b' i.e., Salmonellosis