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. 2005 Dec:1063:327-32.
doi: 10.1196/annals.1355.052.

Detection of a typhus group Rickettsia in Amblyomma ticks in the state of Nuevo Leon, Mexico

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Detection of a typhus group Rickettsia in Amblyomma ticks in the state of Nuevo Leon, Mexico

Aaron Medina-Sanchez et al. Ann N Y Acad Sci. 2005 Dec.

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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