syfilis syphilis tertiary syphilis primary syphilis secondary syphilis http://purl.bioontology.org/ontology/MEDDRA/10056883 http://purl.bioontology.org/ontology/MESH/C536773 http://purl.bioontology.org/ontology/SNOMEDCT/240557004 http://purl.obolibrary.org/obo/DOID_4157 http://purl.obolibrary.org/obo/NCIT_C128413 A syphilis that is characterized as the second stage of syphilis which appears from 2 to 6 months after primary infection, and is marked by lesions especially in the skin but also in organs and tissues, and that lasts from 3 to 12 weeks. other secondary syphilis treponema pallidum infection