Question: what is the difference between influenza a and swine flu?
Answer: Swine influenza, known as swine flu, influenza A (H1N1) or pandemic (H1N1) influenza 2009, is a respiratory disease of pigs caused by type A influenza viruses, most commonly the H1N1 subtype. Regular outbreaks of swine flu occur in pigs year round, and cases have been transmitted to humans.