Is more simply better? Why Pfizer thinks a booster of its Covid vaccine might work against new variants
Could the solution to emerging variants of the coronavirus that causes Covid-19, some of which seem to make current vaccines less effective, be more of the current vaccines?
While Moderna and Pfizer, along with its partner BioNTech, have announced plans to test vaccines specifically targeted at variants of the SARS-CoV-2 virus, they are also planning to test the idea of simply giving people three doses instead of two of their vaccines that have already been authorized. Experts say it’s at least conceivable it could work.
