I want the Sputnik V as it is not mRNA. However, the WHO says those vaccinated with Sputnik V, must get revaccinated with either Pfizer, Moderna, or JJ, if residing in the US, despite Sputnik V’s great efficacy. Why is that?

I want the Sputnik V as it is not mRNA. However, the WHO says those vaccinated with Sputnik V, must get revaccinated with either Pfizer, Moderna, or JJ, if residing in the US, despite Sputnik V’s great efficacy. Why is that?: https://ift.tt/2S0DufF Read more... https://ift.tt/2TJfEp9