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YouTubeTED-Ed
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Learn the science behind how vaccines trigger an immune response and teach our bodies to recognize dangerous pathogens. -- The first ever vaccine was created when Edward Jenner, an English physician and scientist, successfully injected small amounts of a cowpox virus into a young boy to protect him from the related (and deadly) smallpox virus ...
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The government shutdown is leading to the cancellation of hundreds of flights across the United States. CNN's Leigh Waldman spoke with frustrated flyers at the Newark Liberty International Airport in New Jersey. #CNN #News #Flights #Airport
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