Query: NC_000919:12545 Treponema pallidum subsp. pallidum str. Nichols, complete genome Lineage: Treponema pallidum; Treponema; Spirochaetaceae; Spirochaetales; Spirochaetes; Bacteria General Information: This strain was originally isolated in 1912 from a neurosyphilitic patient and is virulent. This organism is the causative agent of endemic and venereal syphilis. This sexual transmitted disease was first discovered in Europe at the end of the fifteenth century, however, the causative agent was not identified until 1905. At one time syphilis was the third most commonly reported communicable disease in the USA. Syphilis is characterized by multiple clinical stages and long periods of latent, asymptomatic infection. Although effective therapies have been available since the introduction of penicillin, syphilis remains a global health problem. This organisms is divided into subspecies each of which causes a specific disease. T. pallidum causes the venereal disease syphilis. T. pertenue, T. carateum and T. endemicum cause the skin infections yaws, pinta and bejel, respectively.
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General Information: Environmental bacterium that causes gastrointestinal disease. Specific virulence factors are encoded within pathogenicity islands (PAIs) that are required for the invasive phenotype associated with Yersinia infections. One key virulence plasmid contained by the three human-specific pathogens is pCD1/pYv, which encodes a type III secretion system for the delivery of virulence proteins that contribute to internalization into the host cell. This organism was first isolated in 1883 by Malassez and Vignal and is termed pseudotuberculosis since it causes lesions in the lung that are similar to those observed during tuberculosis infection. It is ubiquitous in the environment and is a food and waterborne pathogen that affects animals as well as humans by causing gastroenteritis like Yersinia enterocolitica.