Query: NC_010336:607145 Francisella philomiragia subsp. philomiragia ATCC 25017, complete Lineage: Francisella philomiragia; Francisella; Francisellaceae; Thiotrichales; Proteobacteria; Bacteria General Information: Francisella philomiragia subsp. philomiragia ATCC 25017 was isolated from water in the Bear River Refuge in Utah, USA. Causes disease in humans and fish. Francisella philomiragia, formerly Yersinia philomiragia, has been isolated from water, muskrats, fish and humans. F. philomiragia is able to cause an often fatal bacteremia in people with chronic granulomatous disease. This supspecies can also cause pneumonia in near-drowning victims.
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General Information: This strain was isolated from a human in South Africa. Causative agent for Rocky Mountain spotted fever. This genus, like other Rickettsial organisms such as Neorickettsia and Anaplasma, is composed of obligate intracellular pathogens. The latter is composed of two organisms, Rickettsia prowazekii and Rickettsia typhi. The bacteria are transmitted via an insect, usually a tick, to a host organism, in this case humans, where they target endothelial cells and sometimes macrophages. They attach via an adhesin, rickettsial outer membrane protein A, and are internalized where they persist as cytoplasmically free organisms. Transovarial transmission (from mother to offspring) occurs in the invertebrate host. This organism causes Rocky Mountain spotted fever which can cause severe damage to the endothelial layer of major organs, including the lungs, heart, kidneys, and skeletal muscle which can result in death.