Der blev udtrykt bekymring over HepB- komponentens lave immunogenicitet i Hexavac, de mulige konsekvenser ved langtidsbeskyttelse mod hepatitis B- infektion og booster- evnen efter det primære vaccinationsforløb med denne vaccine.
Concerns were expressed on the low immunogenicity of the HepB component of Hexavac and the potential consequences on long-term protection against Hepatitis B infection and boostability post primary course of vaccination with this vaccine.