Borrelia Hermsii

	Borrelia Hermsii ''Borrelia hermsii'' is a spirochete bacterium that has been implicated as a cause of tick-borne relapsing fever. It is spread by the soft-bodied tick '' Ornithodoros hermsi''. References hermsii {{spirochaetes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Spiral Bacteria Spiral bacteria, bacteria of spiral (helical) shape, form the third major morphological category of prokaryotes along with the rod-shaped bacilli and round cocci. Spiral bacteria can be subclassified by the number of twists per cell, cell thickness, cell flexibility, and motility. The two types of spiral cells are spirillum and spirochete, with spirillum being rigid with external flagella, and spirochetes being with internal flagella. Spirillum A spirillum (plural spirilla) is a rigid spiral bacterium that is Gram-negative and frequently has external amphitrichous or lophotrichous flagella. Examples include: * Members of the genus ''Spirillum'' * '' Campylobacter'' species, such as ''Campylobacter jejuni'', a foodborne pathogen that causes campylobacteriosis * ''Helicobacter'' species, such as ''Helicobacter pylori'', a cause of peptic ulcers Spirochetes A spirochete (plural spirochetes) is a very thin, elongate, flexible, spiral bacteria that is motile via internal peripla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Relapsing Fever Relapsing fever is a vector-borne disease caused by infection with certain bacteria in the genus ''Borrelia'', which is transmitted through the bites of lice or soft-bodied ticks (genus ''Ornithodoros''). Signs and symptoms Most people who are infected develop sickness between 5 and 15 days after they are bitten. The symptoms may include a sudden fever, chills, headaches, muscle or joint aches, and nausea. A rash may also occur. These symptoms usually continue for 2 to 9 days, then disappear. This cycle may continue for several weeks if the person is not treated. Causes Louse-borne relapsing fever Along with ''Rickettsia prowazekii'' and ''Bartonella quintana'', ''Borrelia recurrentis'' is one of three pathogens of which the body louse (''Pediculus humanus humanus'') is a vector. Louse-borne relapsing fever is more severe than the tick-borne variety. Louse-borne relapsing fever occurs in epidemics amid poor living conditions, famine and war in the developing world. It is c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Ornithodoros Hermsi ''Ornithodoros hermsi'' is a species of soft tick. It can be infected with ''Borrelia hermsii''. Description ''Ornithodoros hermsi'' is a soft-bodied tick of the family Argasidae. It is one of the smallest ticks of the genus ''Ornithodoros''. Females are larger than the males. ''O. hermsi'' has a multihost lifecycle, and some females have been observed to live four years without any blood meals. They are parasites of rodents and other small mammals. The most favored host is the western chipmunk, ''Eutamias'' spp. Lifecycle As do all other species of ticks, ''O. hermsi'' begin as eggs, then larvae, then nymphs, to adult ticks. ''O. hermsi'' has two larval molts and three nymphal stages. The nymphal blood meals and the greater volume of blood intake will increase the development from nymphs to adults and decrease the number of nymphal stages. Distribution ''O. hermsi'' is found in the northwestern region of the United States, including Washington, Oregon, California, Idaho, Colo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]