This could become increasingly important more of the population becomes vaccinated and case rates continue to fall. If a variant that is able to evade vaccinate

This could become increasingly important more of the population becomes vaccinated and case rates continue to fall. If a variant that is able to evade vaccinated immunity occurs we have the technology to quickly develop updated mRNA vaccines to combat it, but with reduced infection rates it could take many months and high number of participants before the efficacy of an updated vaccine or booster is apparent.