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The G4 virus is genetically descended from the H1N1 swine flu that caused a pandemic in 2009, CNN reported.
from WebMD Healthhttps://img.webmd.com/dtmcms/live/webmd/consumer_assets/site_images/article_thumbnails/slideshows/swine_flu/650x350_swine_flu.jpg https://ift.tt/38j0oCG
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