|Species/Subspecies:||Treponema pallidum subsp. pallidum|
|Categories:||Motile; primarily of interest in human medicin|
|Etymology:||Genus name: A turning thread|
Species epithet: Pale, pallid (referrs to the week Gram-staining)
Subspecies epithet: see Species epithet
|Significance:||T. pallidum subsp. pallidum is globally a very important human pathogen.
|Type Strain:||Not defined|
|Macromorphology (smell):||Cannot be cultivated contiuously in articial media or cell cultures. Is, therfore, propagated intratesicularly in rabbits.|
|Micromorphology:||Tightly coiled (0.1-0.18 x 6-20 µm). Has 2-4 periplasmic flagella at each end of the cell.|
|Gram +/Gram -:||G-|
|Spec. Char.:||Generation time: 24-30 h.|
|Disease:||Syphilis, which is a sexually transmitted disease.
|16S rRNA Seq.:|
||About 25 different species have been described within the genus Treponema. T. pallidum consists of two additional subspecies: pertenue and endemicum, which both are human patogens. Some researchers regard all these subspecies as separate species, although they are very closely related from a phylogenetic point of view. See the phylogenetic tree (Fig. 100:1). T. paraluiscuniculi is very closely related to T. pallidum.|
|Legislation:||Syphilis is classified in Sweden as a dangerous disease under the Communicable Diseases Act and shall be notified to the County Medical Officer in the County Council and to the Public Health Agency of Sweden.|