For my non-scientist followers: this is a preprint, so it hasn’t been reviewed yet. But essentially the vaccines, both Pfizer and Moderna are significantly less effective against these highly transmissible variants, and updated rounds of vaccines are likely https://twitter.com/paulbieniasz/status/1351704157179281413

How do we keep high efficacy (effectiveness) of the current vaccines? STOP THE SPREADING. Particularly of the new variants. If they reach a minimal amount of the population, the current vaccines will be protect at a higher rate

As the spread continues, the virus will continue to have the chance at more infectious variants (via mutation). To limit the number of rounds of potential vaccinations, stop the spread now while the first round is still effective against the majority of the circulating virus