virulence phenotype unaffected virulence qc_do_not_annotate 2018-05-04T13:02:23Z normal virulence unaffected disease severity alaynecuzick A phenotype where the degree to which a pathogen (species or strain) is able to cause infectious disease in another organism is unchanged (i.e. the same degree of infectious disease as wild-type interaction). For use in the annotation extension infective ability. Can apply to changes in the pathogen or the host. pathogen_host_interaction_phenotype