Query: NC_016050:938000 Rickettsia japonica YH, complete genome Lineage: Rickettsia japonica; Rickettsia; Rickettsiaceae; Rickettsiales; Proteobacteria; Bacteria General Information: The causal agent of Oriental Spotted Fever. Human pathogen. Rickettsiae are obligate intracellular Gram-negative bacteria mostly found in arthropods, some of which cause mild to severe diseases in humans. Rickettsia japonica strain YH was isolated in 1985 from the blood of a patient with febrile exanthematous illness in Japan.
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General Information: This strain is an asymptomatic carrier strain that was serum-resistant. Causes disease in cattle. A group of organisms that are either obligate parasites or commensal organisms found in animal mucous membranes. Almost all species require the presence of important growth factors found in the blood of their hosts, including either X factor (protoporphyrin IX or heme) or V factor (nicotinamide adenine dinucleotide (NAD or NADP)). This organism is a major cause of disease in feedlot cattle. It causes constriction of blood vessels supplying major organs, restricting blood supply which leads to reduced oxygen delivery, and leads to tissue damage and death. The diseases that result are pneumonia, arthritis, myocarditis (inflammation of heart muscle), and reproductive problems resulting in the loss of millions of dollars in animals each year.