Pfizer and Moderna vaccines may provide years of protection from COVID-19

The Pfizer-BioNtech and Moderna COVID-19 vaccines will likely provide protection against the coronavirus for years if it doesn’t evolve significantly, a small new study suggests. 

As a massive vaccination effort continues to play out across the globe, there is still a question about how protective COVID-19 vaccines will be in the long term and whether booster shots will be necessary. Some vaccines for other viruses, such as influenza, provide only fleeting protection and need to be renewed every year, but others — such as the MMR vaccine for measles, mumps and rubella — confer lifelong protection.

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