The Virginia Department of Health announces the immediate availability of a booster dose of the Novavax COVID-19 vaccine. It is authorized for persons aged 18 years and older. The Novavax vaccine is based on a technology different from the Pfizer-and Moderna COVID-19 vaccines. The Novavax booster vaccine may only be used as a first booster meaning that you can’t get this booster if you’ve had a booster of another vaccine.