This is the ValueSet that contains all the codes in EU DCC Allowed Vaccine List (COVID-19) (http://smart.who.int/ddcc/ValueSet/EUDCCValueSet) and EU DCC Allowed Vaccine List (COVID-19) (http://smart.who.int/ddcc/ValueSet/EUDCCValueSet). E.g. what you have to deal with if you get resources containing codes in either of them