''Neorickettsia'' is a genus of bacteria.

Species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

strain Strain may refer to: Science and technology * Strain (biology), variants of plants, viruses or bacteria; or an inbred animal used for experimental purposes * Strain (chemistry), a chemical stress of a molecule * Strain (injury), an injury to a mu ...

s in this

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

are coccoid or pleomorphic cells that reside in

cytoplasmic In cell biology, the cytoplasm is all of the material within a eukaryotic cell, enclosed by the cell membrane, except for the cell nucleus. The material inside the nucleus and contained within the nuclear membrane is termed the nucleoplasm. Th ...

vacuole A vacuole () is a membrane-bound organelle which is present in plant and fungal cells and some protist, animal, and bacterial cells. Vacuoles are essentially enclosed compartments which are filled with water containing inorganic and organic mo ...

s within

monocyte Monocytes are a type of leukocyte or white blood cell. They are the largest type of leukocyte in blood and can differentiate into macrophages and conventional dendritic cells. As a part of the vertebrate innate immune system monocytes also inf ...

s and

macrophage Macrophages (abbreviated as M φ, MΦ or MP) ( el, large eaters, from Greek ''μακρός'' (') = large, ''φαγεῖν'' (') = to eat) are a type of white blood cell of the immune system that engulfs and digests pathogens, such as cancer cel ...

s of

dog The dog (''Canis familiaris'' or ''Canis lupus familiaris'') is a domesticated descendant of the wolf. Also called the domestic dog, it is derived from the extinct Pleistocene wolf, and the modern wolf is the dog's nearest living relative. Do ...

horse The horse (''Equus ferus caballus'') is a domesticated, one-toed, hoofed mammal. It belongs to the taxonomic family Equidae and is one of two extant subspecies of ''Equus ferus''. The horse has evolved over the past 45 to 55 million y ...

bat Bats are mammals of the order Chiroptera.''cheir'', "hand" and πτερόν''pteron'', "wing". With their forelimbs adapted as wings, they are the only mammals capable of true and sustained flight. Bats are more agile in flight than most bi ...

s, and

human Humans (''Homo sapiens'') are the most abundant and widespread species of primate, characterized by bipedalism and exceptional cognitive skills due to a large and complex brain. This has enabled the development of advanced tools, culture, ...

s. '' Neorickettsia sennetsu'' causes Sennetsu ehrlichiosis. Unlike other forms of ehrlichiosis, ''Neorickettsia sennetsu'' is transmitted by

trematode Trematoda is a class of flatworms known as flukes. They are obligate internal parasites with a complex life cycle requiring at least two hosts. The intermediate host, in which asexual reproduction occurs, is usually a snail. The definitive host ...

s from fish. ''

Neorickettsia risticii ''Neorickettsia risticii'', formerly ''Ehrlichia risticii,'' is an obligate intracellular gram negative bacteria that typically lives as an endosymbiont to parasitic flatworms, specifically flukes. ''N. risticii'' is the known causative agent of ...

'' causes

Potomac horse fever Potomac Horse Fever (PHF) is a potentially-fatal febrile illness affecting horses caused by the intracellular bacterium '' Neorickettsia risticii''. PHF is also known as Shasta River Crud and Equine Monocytic Ehrlichiosis. It was first described i ...

. ''

Neorickettsia helminthoeca ''Neorickettsia helminthoeca'' is a bacterium in the ''Neorickettsia'' genus that causes Salmon poisoning disease. Salmon poisoning disease Salmon poisoning disease (SPD) is a fatal disease of dogs and other canids caused by a rickettsial bacter ...

'' is found in association with the trematode ''

Nanophyetus salmincola ''Nanophyetus salmincola'' is a food-borne intestinal trematode parasite prevalent on the Pacific Northwest coast. The species may be the most common trematode endemic to the United States. The life cycle of the ''N. salmincola'' requires thr ...

'', and causes

salmon poisoning disease ''Neorickettsia helminthoeca'' is a bacterium in the ''Neorickettsia'' genus that causes Salmon poisoning disease. Salmon poisoning disease Salmon poisoning disease (SPD) is a fatal disease of dogs and other canids caused by a rickettsial bacte ...

in dogs and other canids. '' Neorickettsia elokominica'' causes a similar disease, Elokomin fluke fever, in canids and other species.

Species

* ''

'' * '' Neorickettsia sennetsu'' * '' Neorickettsia elokominica'' * ''

References

External links

Rickettsiales Bacteria genera {{Alphaproteobacteria-stub