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.
A poliomyelitis that results in atrophy located in muscle, many years after the initial infection, has_material_basis_in Human poliovirus 1, has_material_basis_in Human poliovirus 2, or has_material_basis_in Human poliovirus 3. It is characterized by new weakening in muscles that were previously affected by the polio infection and in muscles that were unaffected. The infection has symptom muscle weakness, has symptom muscle pain, has symptom sleep apnea, and has symptom breathing problems. (DO)