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 come under international surveillance 
Select and explain. 
A. Typhoid fever, B. Chikungunya fever, C. Salmonellosis, D. Hepatitis B
C: Salmonellosis
Answer: C: Salmonellosis 
Explanation: Diseases under WHO surveillance 

Polio
Rabies
Relapsing fever
Influenza
Salmonellosis 
Malaria
Louse born typhus