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Rickettsia Sibirica
''Rickettsia sibirica'' is a species of ''Rickettsia''. This bacterium is the etiologic agent of North Asian tick typhus, which is also known as Siberian tick typhus. The ticks that transmit it are primarily various species of ''Dermacentor'' and ''Haemaphysalis ''Haemaphysalis'' is a genus of ticks, containing these species: *'' Haemaphysalis aborensis'' Warburton, 1913 *'' Haemaphysalis aciculifer'' Warburton, 1913 *'' Haemaphysalis aculeata'' Lavarra, 1904 *'' Haemaphysalis adleri'' Feldman-Muhsam, 1 ...''. References Rickettsiaceae {{Alphaproteobacteria-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inoculation Eschar Rickettsia Sibirica Mongolitimonae Infection
Inoculation is the act of implanting a pathogen or other microorganism. It may refer to methods of artificially inducing immunity against various infectious diseases, or it may be used to describe the spreading of disease, as in "self-inoculation," the spreading of disease from one part of the body to another, or even to the spreading of bacteria in a Petri dish for culturing purposes. The terms "inoculation", "vaccination", and "immunization" are often used synonymously, but there are some important differences among them. Inoculation is the act of implanting a disease inside a person or animal, vaccination is the act of implanting or giving someone a vaccine specifically, and immunization is what happens to the immune system as a result. Terminology Until the early 1800s inoculation referred only to variolation (from the Latin word ''variola'' = smallpox), the predecessor to the smallpox vaccine. The smallpox vaccine, introduced by Edward Jenner in 1796, was called cowpox ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rickettsia
''Rickettsia'' is a genus of nonmotile, gram-negative, nonspore-forming, highly pleomorphic bacteria that may occur in the forms of cocci (0.1 μm in diameter), bacilli (1–4 μm long), or threads (up to about 10 μm long). The term "rickettsia" has nothing to do with rickets (which is a deficiency disease resulting from lack of vitamin D); the bacterial genus ''Rickettsia'' instead was named after Howard Taylor Ricketts, in honor of his pioneering work on tick-borne spotted fever. Properly, ''Rickettsia'' is the name of a single genus, but the informal term "rickettsia", plural "rickettsias", usually not capitalised, commonly applies to any members of the order Rickettsiales. Being obligate intracellular bacteria, rickettsias depend on entry, growth, and replication within the cytoplasm of living eukaryotic host cells (typically endothelial cells). Accordingly, ''Rickettsia'' species cannot grow in artificial nutrient culture; they must be grown either in tissue or embryo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pathogen
In biology, a pathogen ( el, πάθος, "suffering", "passion" and , "producer of") in the oldest and broadest sense, is any organism or agent that can produce disease. A pathogen may also be referred to as an infectious agent, or simply a germ. The term ''pathogen'' came into use in the 1880s. Typically, the term ''pathogen'' is used to describe an ''infectious'' microorganism or agent, such as a virus, bacterium, protozoan, prion, viroid, or fungus. Small animals, such as helminths and insects, can also cause or transmit disease. However, these animals are usually referred to as parasites rather than pathogens. The scientific study of microscopic organisms, including microscopic pathogenic organisms, is called microbiology, while parasitology refers to the scientific study of parasites and the organisms that host them. There are several pathways through which pathogens can invade a host. The principal pathways have different episodic time frames, but soil has the longest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Asian Tick Typhus
North Asian tick typhus also known as Siberian tick typhus, is a condition characterized by a maculopapular rash A rash is a change of the human skin which affects its color, appearance, or texture. A rash may be localized in one part of the body, or affect all the skin. Rashes may cause the skin to change color, itch, become warm, bumpy, chapped, dry, c .... It is associated with '' Rickettsia sibirica''. See also * Flinders Island spotted fever * Queensland tick typhus * List of cutaneous conditions References External links Bacterium-related cutaneous conditions Typhus Tick-borne diseases {{Dermatology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tick
Ticks (order Ixodida) are parasitic arachnids that are part of the mite superorder Parasitiformes. Adult ticks are approximately 3 to 5 mm in length depending on age, sex, species, and "fullness". Ticks are external parasites, living by feeding on the blood of mammals, birds, and sometimes reptiles and amphibians. The timing of the origin of ticks is uncertain, though the oldest known tick fossils are from the Cretaceous period, around 100 million years old. Ticks are widely distributed around the world, especially in warm, humid climates. Ticks belong to two major families, the Ixodidae or hard ticks, and the Argasidae, or soft ticks. ''Nuttalliella,'' a genus of tick from southern Africa is the only member of the family Nuttalliellidae, and represents the most primitive living lineage of ticks. Adults have ovoid/pear-shaped bodies (idiosomas) which become engorged with blood when they feed, and eight legs. Their cephalothorax and abdomen are completely fused. In addit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dermacentor
''Dermacentor'' is a genus of ticks in the family Ixodidae, the hard ticks. The genus has a cosmopolitan distribution, with native species on all continents except Australia. Most occur in the Nearctic realm. Hosts of ''Dermacentor'' ticks include many large and small mammals, including horses, deer, cattle, lagomorphs, peccaries, porcupines, tapirs, desert bighorn sheep, and humans. The American dog tick (''D. variabilis'') is a member of the genus. ''Dermacentor'' species are vectors of many pathogens, including ''Rickettsia rickettsii'', which causes the disease Rocky Mountain spotted fever, ''Coxiella burnetii'', which causes Q fever, ''Anaplasma marginale'', which causes anaplasmosis in cattle, ''Francisella tularensis'', which causes tularemia, '' Babesia caballi'', which causes equine piroplasmosis, and the ''Flavivirus'' that causes Powassan encephalitis. ''Dermacentor'' ticks inject a neurotoxin that causes tick paralysis. Species As of 2019, about 41 species are pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haemaphysalis
''Haemaphysalis'' is a genus of ticks, containing these species: *'' Haemaphysalis aborensis'' Warburton, 1913 *'' Haemaphysalis aciculifer'' Warburton, 1913 *'' Haemaphysalis aculeata'' Lavarra, 1904 *'' Haemaphysalis adleri'' Feldman-Muhsam, 1951 *'' Haemaphysalis anomala'' Warburton, 1913 *'' Haemaphysalis anomaloceraea'' Teng & Cui, 1984 *'' Haemaphysalis anoplos'' Hoogstraal, Uilenberg & Klein, 1967 *'' Haemaphysalis aponommoides'' Warburton, 1913 *'' Haemaphysalis asiatica'' (Supino, 1897) *'' Haemaphysalis atheruri'' Hoogstraal, Trapido & Kohls, 1965 *'' Haemaphysalis bancrofti'' Nuttall & Warburton, 1915 *'' Haemaphysalis bandicota'' Hoogstraal & Kohls, 1965 *'' Haemaphysalis bartelsi'' Schulze, 1938 *'' Haemaphysalis bequaerti'' Hoogstraal, 1956 *'' Haemaphysalis birmaniae'' Supino, 1897 *'' Haemaphysalis bispinosa'' Neumann, 1897 *'' Haemaphysalis bochkovi'' Apanaskevich & Tomlinson, 2019Dmitry Apanaskevich and Jackson A. Tomlinson. 2019. Description of four new species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
