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Scientific classification
Kingdom: Bacteria
Phylum: Proteobacteria
Class: Alpha Proteobacteria
Order: Rickettsiales
Family: Anaplasmataceae
Genus: Neorickettsia
Classification and external resources
Specialty infectious disease
ICD-10 A79.8

Neorickettsia is a genus of bacteria. Species or strains in this genus are coccoid or pleomorphic cells that reside in cytoplasmic vacuoles within monocytes and macrophages of dogs, horses, bats, and humans.[1]

Neorickettsia sennetsu causes Sennetsu ehrlichiosis.[2] Unlike other forms of ehrlichiosis, Neorickettsia sennetsu is transmitted by trematodes from fish.[3] Neorickettsia risticii causes Potomac horse fever. Neorickettsia helminthoeca is found in association with the trematode Nanophyetus salmincola, and causes salmon poisoning disease in dogs and other canids. Neorickettsia elokominica causes a similar disease, Elokomin fluke fever, in canids and other species.