<prompt> Swine Flu pandemic in 2009 was caused due to which strain: September 2010H1N1H3N1H5N1H7N1  <response>: Ans. A: H1N1 Swine flu is also known as swine influenza, hog flu and pig flu. In 2009 the media labeled as swine flu the flu caused by 2009s new strain of swine-origin AH1N1 pandemic virus just as it had earlier dubbed as an flu flu caused by the recent Asian-linage HPAI High Pathogenic An Influenza H5N1 strain that is still endemic in many wild bird species in several countries. 