This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
Pig in H1N1 influenza acts as? 
Select and explain. 
A. Carrier, B. Amplifying host, C. Reservoir, D. Vector
C: Reservoir
Answer: C: Reservoir 
Explanation: Pig / swine is reservoir of H1N1 influenza. Reference; Park&;s Textbook of preventive and social medicine, 24th edition.Pg no. 164