This is the ValueSet that contains all the codes in Snomed CT Concept Viral Diseases (http://fhir.ch/ig/ch-term/ValueSet/snomedct-concept-viraldiseases-vs) and Snomed CT Concept Viral Diseases (http://fhir.ch/ig/ch-term/ValueSet/snomedct-concept-viraldiseases-vs). E.g. what you have to deal with if you get resources containing codes in either of them