This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Microbiology
which strain of influenza was declared recently as pandemic 
Select and explain. 
A. H1N1, B. H5N1, C. H7N7, D. H3N3
A: H1N1
Answer: A: H1N1 
Explanation: inJune 2009 a new strain of H1N1 influenza called swine flu was declared to be a global pandemic by the WHO REF : ANANTHNARYANA