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  • Title: Detection of a typhus group Rickettsia in Amblyomma ticks in the state of Nuevo Leon, Mexico.
    Author: Medina-Sanchez A, Bouyer DH, Alcantara-Rodriguez V, Mafra C, Zavala-Castro J, Whitworth T, Popov VL, Fernandez-Salas I, Walker DH.
    Journal: Ann N Y Acad Sci; 2005 Dec; 1063():327-32. PubMed ID: 16481535.
    Abstract:
    The state of Nuevo Leon, Mexico has had outbreaks of typhus group rickettsiosis, most recently recognized in 1997. Evaluation of the sera of 345 patients with a dengue-like illness revealed that 25.5% had antibodies reactive with typhus group rickettsiae and 16% had antibodies to Rickettsia parkeri. Rickettsiae were detected by PCR and shell-vial isolations in the field-collected Amblyomma ticks. Molecular characterization by DNA sequence analysis of the gltA, ompB, and 17-kDa gene identified the organisms to be R. prowazekii.
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