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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/12/09 17:00:00」(JST)

Neorickettsia risticii (formerly Ehrlichia risticii)^[1] is a gram-negative bacterium that causes Potomac Horse Fever.

References

^ Dumler JS, Barbet AF, Bekker CP, et al. (2001). "Reorganization of genera in the families Rickettsiaceae and Anaplasmataceae in the order Rickettsiales: unification of some species of Ehrlichia with Anaplasma, Cowdria with Ehrlichia and Ehrlichia with Neorickettsia, descriptions of six new species combinations and designation of Ehrlichia equi and 'HGE agent' as subjective synonyms of Ehrlichia phagocytophila". Int. J. Syst. Evol. Microbiol. 51 (Pt 6): 2145–65. doi:10.1099/00207713-51-6-2145. PMID 11760958.

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1. エーリキアの生物学 biology of ehrlichiae
2. ヒトエーリキア症およびアナプラズマ症 human ehrlichiosis and anaplasmosis
3. 慢性肉芽腫性疾患：病因、臨床症状、および診断 chronic granulomatous disease pathogenesis clinical manifestations and diagnosis

Infectious agents associated with diarrhoea in neonatal foals in central Kentucky: a comprehensive molecular study.

Slovis NM1, Elam J, Estrada M, Leutenegger CM.
Equine veterinary journal.Equine Vet J.2014 May;46(3):311-6. doi: 10.1111/evj.12119. Epub 2013 Aug 30.
REASONS FOR PERFORMING STUDY: Diarrhoea caused by infectious agents is common in foals but there is no comprehensive molecular work-up of the relative prevalence of common agents and appearance of coinfections.OBJECTIVES: To determine the prevalence of 9 infectious agents in gastrointestinal (GI)-di
PMID 23773143

Transmission rates of the bacterial endosymbiont, Neorickettsia risticii, during the asexual reproduction phase of its digenean host, Plagiorchis elegans, within naturally infected lymnaeid snails.

Greiman SE1, Tkach VV, Vaughan JA.
Parasites & vectors.Parasit Vectors.2013 Oct 22;6:303. doi: 10.1186/1756-3305-6-303.
BACKGROUND: Neorickettsia are obligate intracellular bacterial endosymbionts of digenean parasites present in all lifestages of digeneans. Quantitative information on the transmission of neorickettsial endosymbionts throughout the complex life cycles of digeneans is lacking. This study quantified th
PMID 24383453

Detection of Neorickettsia risticii from various freshwater snail species collected from a district irrigation canal in Nevada County, California.

Pusterla N1, Hagerty D, Mapes S, Vangeem J, Groves LT, Dinucci M, Fielding LC, Higgins JC.
Veterinary journal (London, England : 1997).Vet J.2013 Aug;197(2):489-91. doi: 10.1016/j.tvjl.2013.02.024. Epub 2013 Apr 6.
This study investigated the role of a district irrigation canal in Nevada County, California, USA, as the point source of infection for Neorickettsia risticii, causative agent of equine neorickettsiosis (EN). A total of 568 freshwater snails comprising Juga spp., Planorbella subcrenata (Carpenter, 1
PMID 23566936

Ehrlichiaceae
Scientific classification
Kingdom:	Bacteria
Phylum:	Proteobacteria
Class:	Alpha Proteobacteria
Order:	Rickettsiales
Family:	Anaplasmataceae
Genus:	Neorickettsia
Species:	N. risticii
Binomial name
	Neorickettsia risticii (Dumler et al., 2001);