Category
page 1Spirochaetes
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syphilis
Syphilis () is a sexually transmitted infection caused by the bacterium Treponema pallidum subspecies pallidum. The signs and symptoms depend on the stage it presents: primary, secondary, latent or tertiary. The primary stage classically presents with a single chancre (a firm, painless, non-itchy skin ulceration usually between 1 cm and 2 cm in diameter), though there may be multiple sores. In secondary syphilis, a diffuse rash occurs, which frequently involves the palms of the hands and soles of the feet. There may also be sores in the mouth or vagina. Latent syphilis has no symptom
leptospirosis
Spirochaetales
The Spirochaetales are an order of spirochete bacteria. Some species within this order are known to causes syphilis, Lyme disease, relapsing fever, and other illnesses.
Leptospira
Leptospira () is a genus of spirochaete bacteria, including a small number of pathogenic and saprophytic species. Leptospira was first observed in 1907 in kidney tissue slices of a leptospirosis victim who was described as having died of "yellow fever". In 1917, Hideyo Noguchi named the genus Leptospira after witnessing it in the kidneys of American rats seemingly producing the same disease in Guinea pigs as in European rats.

Borrelia
Borrelia is a genus of bacteria of the spirochete phylum. Several species cause Lyme disease, also called Lyme borreliosis, a zoonotic, vector-borne disease transmitted by ticks. Other species of Borrelia cause relapsing fever, and are transmitted by ticks or lice, depending on the species of bacteria.
Jarisch-Herxheimer reaction
reaction to endotoxin-like products released by the death of harmful microorganisms within the body during antimicrobial treatment
Spirochaetaceae
The Spirochaetaceae are a family of spirochete bacteria. Some species within this family are known to have been causes for syphilis, Lyme disease, relapsing fever, and other illnesses.

Spirochaetae
thumb|250px|Cross section of a spirochaete cell
thumb|Endoflagella Components. Legend:
Fig. 1: A cross-section of a typical spirochete cell showing endoflagella located in the periplasm between the inner cytoplasmic membrane and the outer membrane. Periplasm, consisting of a gel-like matrix, provides a semi-stable medium to secure endoflagella during rotation. The axial filament, indicated in red, is composed of bundles of endoflagella.
Fig. 2: A side-view of a spirochete cell which shows two axial filaments in opposing motion. One axial filament rotates in a clockwise orientation; an adjacent
Spirochaeta
Spirochaeta is a genus of bacteria classified within the phylum Spirochaetota.
Leptospiraceae
The Leptospiraceae are a family of spirochete bacteria. It includes the genus Leptospira which contains some pathogenic species.
erythema chronicum migrans
rash in several vector-borne diseases
acrodermatitis chronica atrophicans
acrodermatitis characterized by a chronically progressive course, leading to widespread atrophy of the skin. It is a clinical manifestation of Lyme borreliosis
Cristispira
Cristispira is a genus of bacteria of the spirochaete phylum. They are known as large spirochetes. They are characterized by the host species in which they reside. They are known as harmless parasites of freshwater and marine molluscs and gastropods. They have an unusually large number of periplasmic flagella.
Treponema denticola
species of bacterium
Brachyspiraceae
Brachyspiraceae is a family of Spirochaetota.
Brachyspira
Brachyspira is a genus of bacteria classified within the phylum Spirochaetota.