_:vb50952735 . _:vb50952735 . _:vb50952735 . _:vb50952735 "url:http://www2.merriam-webster.com/cgi-bin/mwmednlm?book=Medical&va=syphilis"^^ . _:vb50952735 . _:vb50952735 . _:vb50952735 . _:vb50952735 "A primary bacterial infectious disease that is a sexually transmitted systemic disease, has_material_basis_in Treponema pallidum subsp pallidum, which is transmitted_by sexual contact, transmitted_by blood product transfusion, transmitted_by congenital method from mother to fetus or transmitted_by contact with infectious lesions. If left untreated, produces chancres, rashes, and systemic lesions in a clinical course with three stages continued over many years."^^ . _:vb50952735 "url:http://en.wikipedia.org/wiki/Syphilis"^^ .