pathogenicity phenotype loss of pathogenicity abolished pathogenicity qc_extension_only pathogen_host_interaction_phenotype 2018-05-04T12:45:31Z loss of disease causing ability alaynecuzick For use in the annotation extension infective ability. Can only apply to changes in the pathogen. Note that this ability to cause pathogenicity is a feature of the pathogen. Therefore gain/loss of pathogenicity should never be dependent on changes to the host genotype, only on changes to the pathogen genotype. If you are annotating changes in disease presence or absence dependent on the changes to the host consider increased/decreased virulence phenotypes. Note that avirulence means loss of/abolished virulence in plant pathology terminology. A phenotype where the ability of a pathogen, to produce an infectious disease in another organism is abolished (pathogenicity was present and is now absent).