RGD uses the Human Disease Ontology (DO, https://disease-ontology.org/) for disease curation across species. RGD automatically downloads each new release of the ontology on a monthly basis. Some additional terms which are required for RGD's curation purposes but are not currently covered in the official version of DO have been added. As corresponding terms are added to DO, these custom terms are retired and the DO terms substituted in existing annotations and subsequently used for curation.
An opportunistic bacterial infectious disease that results_in disseminated infection in immunocompromised hosts, has_material_basis_in Nocardia asteroides. The infection has_symptom pneumonia, has_symptom cellulitis, has_symptom lesions in the brain or meninges, and has_symptom ascending regional lymphadenopathy. (DO)