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Clinical and epidemiological comparison of Rickettsia parkeri rickettsiosis, related to Amblyomma triste and Amblyomma tigrinum, in Argentina

Abstract
The aim of this work was to compare the epidemiological and clinical characteristics of Rickettsia parkeri rickettsiosis related to Amblyomma triste and Amblyomma tigrinum ecological regions in Argentina. We reviewed cases of R. parkeri rickettsiosis from 2007 to 2017 evaluated at Muñiz Hospital, directly or through referral. Univariate analysis was used to examine the association between different variables and the disease related by each vector species. [ver mas...]
The aim of this work was to compare the epidemiological and clinical characteristics of Rickettsia parkeri rickettsiosis related to Amblyomma triste and Amblyomma tigrinum ecological regions in Argentina. We reviewed cases of R. parkeri rickettsiosis from 2007 to 2017 evaluated at Muñiz Hospital, directly or through referral. Univariate analysis was used to examine the association between different variables and the disease related by each vector species. The eighteen cases of R. parkeri rickettsiosis included had fever, inoculation eschar and all except one had rash. Regional differences in epidemiological variables were identified, depending on the vector. There was a significantly increased risk of exposure to A. tigrinum in peri-domestic areas (odd ratio 12, p = 0.02), whereas an increased risk of exposure to A. triste was evident in wildlife areas (odd ratio 12, p = 0.02). Seasonality of R. parkeri rickettsiosis differed based on its vector. Cases associated with A. triste occurred predominantly during spring and summer, whereas those associated with A. tigrinum occurred during fall, winter, and springtime. Exanthema was maculopapular (13/18), maculo-vesicular (3/18) or petechial (1/18). No clinical differences were identified depending on the vector. [Cerrar]
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Author
Romer, Yamila;   Borras, Pablo;   Govedic, Francisco;   Nava, Santiago;   Carranza, José Ignacio;   Santini, María Soledad;   Armitano, Rita Inés;   Lloveras, Susana;  
Fuente
Ticks and Tick-borne Diseases 11 (4) : 101436 (July 2020)
Date
2020-07
Editorial
Elsevier
ISSN
1877-959X
URI
http://hdl.handle.net/20.500.12123/8052
https://www.sciencedirect.com/science/article/abs/pii/S1877959X19302298
DOI
https://doi.org/10.1016/j.ttbdis.2020.101436
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pdf
Tipo de documento
artículo
Palabras Claves
Rickettsia; Amblyomma; Enfermedades Transmitidas por Garrapatas; Tick-borne Diseases; Vectores; Vectors; Argentina; Garrapatas; Ticks; Rickettsia parkeri; Amblyomma triste; Amblyomma tigrinum;
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Excepto donde se diga explicitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
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