"The logic is that after you inject the first component, the body starts attacking it. So next time you inject the same component, it's less efficient because of the immunity being built of this component."
That’s why the Sputnik V vaccine could be used alongside other injections.
Read more: https://newseu.cgtn.com/news/2021-02-05/Use-Sputnik-V-jab-with-others-to-boost-results-Russian-vaccine-boss-XC2nIJ6J6U/index.html
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