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Medicina interna de México
Print version ISSN 0186-4866
Abstract
GARCIA-ACOSTA, J; AGUILAR-GARCIA, CR and AGUILAR-ARCE, IE. Typhus. Med. interna Méx. [online]. 2017, vol.33, n.3, pp.351-362. ISSN 0186-4866.
The genus Rickettsia is composed of two groups antigenically defined, typhus group including Rickettsia prowazekii, which causes epidemic typhus and R. typhi, which causes murine or endemic typhus. The other group is one of spotted fever. The genus Rickettsia is made up of different species of gramnegative bacteria, in turn it is part of the family Rickettsiaceae (with Coxiella, Ehrlichia, and Bartonella). All species of the genus have in common being strict intracellular parasites with an average size of 0.3 to 0.5 pm, require certain vectors that allow trasmission, and have great difficulty be grown in the laboratory. Below there is a review of the varieties of presentation of typhus and its situation in Mexico.
Keywords : Rickettsia; typhus; louse spotted fever.