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Coronavirus: Covid-19 new variants—known unknowns – The BMJ

d vaccine efficacy for variants of concern. She shared unknowns such as the fact that some variants can cause reinfection, but we do not have  enough data to confirm the extent of this. Some variants (E484K, L452R) seem to reduce vaccine efficacy and pre-existing natural immunity, so we do not know whether
— Read on blogs.bmj.com/bmj/2021/04/21/covid-19-new-variants-known-unknowns/

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