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
Diseases under International surveillance 
Select and explain. 
A. Poliomyelitis, B. Rabies, C. Malaria, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Diseases under International surveillance 

Rabies
Malaria
Relapsing fever
Human Influenza
Salmonellosis
Typhus fever (Louse borne)
Poliomyelitis