Will a COVID-19 vaccine need to be given annually?

When a vaccine is authorized, we will only have information about the length of immunity for as long as people were vaccinated during the trials. For example, if the first people in the study were vaccinated in July 2020 and the vaccine is licensed in December 2020, we will only have information about the immune response up to 5 months after vaccination. The vaccine manufacturer will continue to monitor vaccine recipients for several months or more, so that over time, we will continue to get a better picture of the durability of immunity. With this information, we will be better able to understand whether vaccines against COVID-19 will require annual dosing like influenza.

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