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The brown dog tick, or Rhipicephalus sanguineous, which passes the organism to the dog, is prevalent throughout most of the United States, but most cases tend to occur in the Southwest and Gulf Coast regions, where there is a high concentration of the tick. Ehrlichia is found in many parts of the world [1] and was first recognized in Algeria in ...
Neorickettsia Scientific classification Domain: Bacteria Phylum: Pseudomonadota Class: Alphaproteobacteria Order: Rickettsiales Family: Ehrlichiaceae Genus: Neorickettsia Philip et al. 1953 (Approved Lists 1980) Species See text. 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 ...
Rickettsia typhi is a small, gram-negative intracellular bacterium that establishes the murine typhus infection in mammals and fleas. [30] Murine typhus was once one of the most prevalent rickettsial diseases in the world, [8] [9] [10] having isolated the R. typhi causative agent from nearly every continent around the globe except for Antarctica.
They are obligate intracellular parasites, and some are notable pathogens, including Rickettsia, which causes a variety of diseases in humans, and Ehrlichia, which causes diseases in livestock. Another genus of well-known Rickettsiales is the Wolbachia , which infect about two-thirds of all arthropods and nearly all filarial nematodes. [ 2 ]
It is caused by Ehrlichia ruminantium (formerly Cowdria ruminantium)—an intracellular Gram-negative coccal bacterium (also referred to as Rickettsia ruminantium). The disease is spread by various Amblyomma ticks, and has a large economic impact on cattle production in affected areas. There are four documented manifestations of the disease ...
Rickettsialpox is a mite-borne infectious illness caused by bacteria of the genus Rickettsia (Rickettsia akari). [1] Physician Robert Huebner and self-trained entomologist Charles Pomerantz played major roles in identifying the cause of the disease after an outbreak in 1946 in a New York City apartment complex, documented in "The Alerting of Mr. Pomerantz," an article by medical writer Berton ...
Salmon poisoning disease (SPD) is a fatal disease of dogs and other canids caused by a rickettsial bacterium, Neorickettsia helminthoeca. [2] It results from eating raw salmon, trout, or salamander and is common in the Pacific Northwest.
No rapid laboratory tests are available to diagnose rickettsial diseases early in the course of illness, and serologic assays usually take 10–12 days to become positive. Research is indicating that swabs of eschars may be used for molecular detection of rickettsial infections. [6] [7]