Vaccines trains our body to fight virus and illness rather than treating illness such as Covid-19. All virus including coronavirus have protein and sugar structures that are attacked by anti-bodies. Our immune system is equipped with white blood cells that generate anti-bodies to guard us against viral diseases. This video is a quick introduction to virus, vaccines and role of our immune system.
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I am Khurram Waris, an engineer and a teacher – You can also follow me on twitter at https://www.twitter.com/kwaris100