What we know about our immune system | Covid-19 Special

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No one can say how long or how much an individual person is protected "on average" from a new COVID infection. What do we really know about how the immune system works? Among other stories in this edition: malnutrition, diabetes and long COVID. Subscribe: https://www.youtube.com/user/deutschewelleenglish?sub_confirmation=1 For more news go to: http://www.dw.com/en/ Follow DW on social media: ►Facebook: https://www.facebook.com/deutschewellenews/ ►Twitter: https://twitter.com/dwnews ►Instagram: https://www.instagram.com/dwnews Für Videos in deutscher Sprache besuchen Sie: https://www.youtube.com/dwdeutsch #covid19 #immunity #vaccination
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