For nogle kategorier af individer, som har øget risiko for HBV (f. eks hæmodialyse eller immunkompromitterede patienter), skal sikkerhedsforanstaltninger overvejes for at sikre, at et beskyttende antistofniveau ≥10mIU/ ml. opretholdes.
For some categories of subjects at risk of exposure to HBV (e. g. haemodialysis or immunocompromised patients) a precautionary attitude should be considered to ensure that a protective antibody level ≥ 10 mIU/ ml is maintained.