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