On Jun. 20, 2013, the Advisory Committee on Immunization Practices (ACIP) voted 13 to 0, in favor of recommending FluBlok during the 2013-2014 influenza season for vaccination of persons 18 through 49 years of age with egg allergy of any severity.

FluBlok was licensed by the Food and Drug Administration (FDA) in January 2013. Unlike current production methods for other available seasonal influenza vaccines, FluBlok does not use the influenza virus or chicken eggs in its manufacturing process.