This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
Swine flu is known as 
Select and explain. 
A. H5N1, B. H1N1, C. H1N5, D. H1N2
B: H1N1
Answer: B: H1N1 
Explanation: Ans: b) HIN1A simple one. Swine flu is also known as H1N1.