Why is 2009 H1N1 virus sometimes called swine flu
{"Image DocumentName": "Why is 2009 H1N1 virus sometimes called swine flu ?", "Image ImageDescription": "First, I ll begin by explaining what swine flu is. Swine flu is a respiratory disease of pigs caused by type A influenza viruses. Outbreaks of swine flu happen regularly in pigs. People do not normally get swine flu, but human infections can and do occur. Most commonly, human cases of swine flu happen in people who are around pigs, but it s possible for swine flu viruses to spread from person to person, also.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}