This is the ValueSet that contains all the codes in WHO Agent Targeted (COVID-19) (http://smart.who.int/ddcc/ValueSet/WHODDCCAgentTargetedCOVID19) and WHO Agent Targeted (COVID-19) (http://smart.who.int/ddcc/ValueSet/WHODDCCAgentTargetedCOVID19). E.g. what you have to deal with if you get resources containing codes in either of them