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Human monocytotropic ehrlichiosis occurs in California in Ixodes pacificus ticks and in Dermacentor variabilis ticks. [14] Nearly 600 cases were reported to the CDC in 2006. In 2001–2002, the incidence was highest in Missouri, Tennessee, and Oklahoma, as well as in people older than 60.
Ehrlichiosis is a nationally notifiable disease in the United States. Cases have been reported in every month of the year, but most cases are reported during April–September. [23][24][25] These months are also the peak months for tick activity in the United States. [7] The majority of cases of Ehrlichiosis tend to be in the United States.
E. chaffeensis causes human monocytic ehrlichiosis and is known to infect monocytes. [1] It has also been known to infect other cell types such as lymphocytes, atypical lymphocytes, myelocytes, and neutrophils, but monocytes appear to best harbor the infection. [1] E. chaffeensis has also been shown to infect canines both naturally [6] and ...
Ehrlichiosis ewingii infection [1] is an infectious disease caused by an intracellular bacteria, Ehrlichia ewingii. [2] The infection is transmitted to humans by the tick, Amblyomma americanum . This tick can also transmit Ehrlichia chaffeensis , the bacteria that causes human monocytic ehrlichiosis (HME).
Ehrlichiosis (/ ˌɛərlɪkiˈoʊsɪs /; also known as canine rickettsiosis, canine hemorrhagic fever, canine typhus, tracker dog disease, and tropical canine pancytopenia) is a tick-borne disease of dogs usually caused by the rickettsial agent Ehrlichia canis. Ehrlichia canis is the pathogen of animals.
Human granulocytic anaplasmosis (HGA) is a tick-borne, infectious disease caused by Anaplasma phagocytophilum, an obligate intracellular bacterium that is typically transmitted to humans by ticks of the Ixodes ricinus species complex, including Ixodes scapularis and Ixodes pacificus in North America. These ticks also transmit Lyme disease and ...
The Ehrlichia genome contains many different variants of genes that encode outer membrane proteins, [3] which have gone through intense modification over long periods of time. [4] The great diversity in outer membrane protein genes is thought to originate from gene duplication events, followed by the fusion and fission of resulting paralogs of ...
Ehrlichia canis is an obligate intracellular bacterium that acts as the causative agent of ehrlichiosis, a disease most commonly affecting canine species. This pathogen is present throughout the United States (but is most prominent in the South), [3] South America, Asia, Africa and recently in the Kimberley region of Australia. [4][5] First ...