Emerging Infectious Diseases, 2007 We report finding Rickettsia parkeri in Brazil in 9.7% of Amblyomma triste ticks examined. An R. parkeri isolate was successfully established in Vero cell culture. Molecular characterization of the agent was performed by DNA sequencing of portions of the
Iara Silveira +4 more
doaj +4 more sources
Serological evidence of Rickettsia parkeri as the etiological agent of rickettsiosis in Uruguay Evidência sorológica de Rickettsia parkeri como agente etiológico de rickettsiose no Uruguai [PDF]
Revista do Instituto de Medicina Tropical de São Paulo, 2009 We report three new rickettsiosis human cases in Uruguay. The three clinical cases presented clinical manifestations similar to previous reported cases of Rickettsia parkeri in the United States; that is mild fever (< 40 ºC), malaise, headache, rash ...
Ismael A. Conti-Díaz +3 more
doaj +6 more sources
Rickettsia parkeri in Argentina
Emerging Infectious Diseases, 2008 Clinical reports of an eschar-associated rickettsiosis in the Paraná River Delta of Argentina prompted an evaluation of Amblyomma triste ticks in this region. When evaluated by PCR, 17 (7.6%) of 223 questing adult A.
Santiago Nava +5 more
doaj +4 more sources
Rickettsia parkeri in Amblyomma triste from Uruguay [PDF]
Emerging Infectious Diseases, 2004 Our goal was to detect whether spotted fever group Rickettsia are found in the suspected vector of rickettsioses, Amblyomma triste, in Uruguay. Rickettsia parkeri was detected in A.
José M. Venzal +5 more
doaj +6 more sources
Rickettsia parkeri Rickettsiosis, Argentina
Emerging Infectious Diseases, 2011 Rickettsia parkeri, a recently identified cause of spotted fever rickettsiosis in the United States, has been found in Amblyomma triste ticks in several countries of South America, including Argentina, where it is believed to cause disease in humans.
Yamila Romer +6 more
doaj +4 more sources
Role of Sca2 and RickA in the Dissemination of Rickettsia parkeri in Amblyomma maculatum [PDF]
Infection and Immunity, 2018 ABSTRACT The Gram-negative obligate intracellular bacterium Rickettsia parkeri is an emerging tick-borne human pathogen. Recently, R. parkeri Sca2 and RickA have been implicated in adherence and actin-based motility in vertebrate host cell infection models; however, the rickettsia ...
Matthew D Welch, Kevin R Macaluso
exaly +6 more sources
Rickettsia parkeri and Rickettsia montanensis, Kentucky and Tennessee, USA
Emerging Infectious Diseases, 2014 We found that 14.3% (15/105) of Amblyomma maculatum and 3.3% (10/299) of Dermacentor variabilis ticks collected at 3 high-use military training sites in west-central Kentucky and northern Tennessee, USA, were infected with Rickettsia parkeri and ...
Benedict B. Pagac +5 more
doaj +4 more sources
Phylogenetic Evidence for the Existence of Multiple Strains of Rickettsia parkeri in the New World [PDF]
Applied and Environmental Microbiology, 2018 ABSTRACT The bacterium Rickettsia parkeri has been reported to infect ticks of the “ Amblyomma maculatum species complex” in the New World, where it causes spotted fever illness in humans.
Fernanda A Nieri-Bastos +2 more
exaly +7 more sources
Rickettsia parkeri and Candidatus Rickettsia andeanae in Tick of the Amblyomma maculatum Group, Mexico [PDF]
Emerging Infectious Diseases, 2019 We report Rickettsia parkeri and Candidatus Rickettsia andeanae in ticks of the Amblyomma maculatum group collected from dogs in Sonora, Mexico. Molecular characterization of these bacteria was accomplished by DNA amplification and sequence analysis of ...
Jesús Delgado-de la Mora +11 more
doaj +5 more sources
Host glutathione is required for Rickettsia parkeri cell division and intracellular survival [PDF]
Nature CommunicationsIntracellular bacteria rely on eukaryotic metabolites for their fitness and pathogenesis. Yet, the mechanisms of how host metabolites promote bacterial physiology and immune evasion are often unclear.
Han Sun +3 more
doaj +5 more sources