Among these are gelatine, supplemented in the varicella zoster-based Varivax (MSD Sharp & Dohme GmBH, 2022) and the influenza vaccine FluMist (FDA, 2022b), HSA, applied in the modified vaccinia Ankara-based ACAM2000 vaccine (FDA, 2022a), and recombinant albumin (rHSA), supplemented in the mumps-measles-rubella vaccine MMRII (Wiedmann et al., 2015) and in the Vesicular stomatitis virus-based Ebola vaccine Ervebo (EMA, 2022b). This evidence concerns the gene ALB and influenza.