Phylogenetic Differentiation of Rickettsia parkeri Reveals Broad Dispersal and Distinct Clustering within North American Strains. [PDF]
Microbiology Spectrum, 2021 The tick-borne pathogen Rickettsia parkeri causes a mild rickettsiosis, with cases reported from several countries to its known distribution in the Americas. Molecular analyses have identified a clear distinction between strains of R.
Sandor E Karpathy +2 more
exaly +4 more sources
DRP1/DMNL-1-mediated mitochondrial fission augments Rickettsia parkeri replication in macrophages [PDF]
Infection and ImmunityPathogenic Spotted Fever Group (SFG) Rickettsia species, including Rickettsia parkeri, replicate in endothelial cells and macrophages in vitro and during infections in murine models of disease.
Elliott Collins +5 more
doaj +2 more sources
Rickettsia parkeri Rickettsiosis Resembling Sweet Syndrome: A Differential Diagnosis for Critical Discussion [PDF]
Infectious Disease ReportsIntroduction: Spotted fever group (SFG) rickettsioses are tick-transmitted infections caused by Gram-negative, obligately intracellular bacteria in the genus Rickettsia.
Lucas S. Blanton +3 more
doaj +2 more sources
Rickettsia parkeri with a Genetically Disrupted Phage Integrase Gene Exhibits Attenuated Virulence and Induces Protective Immunity against Fatal Rickettsioses in Mice [PDF]
Pathogens, 2021 Although rickettsiae can cause life-threatening infections in humans worldwide, no licensed vaccine is currently available. To evaluate the suitability of live-attenuated vaccine candidates against rickettsioses, we generated a Rickettsia parkeri mutant ...
Esteban Arroyave +6 more
doaj +2 more sources
Eco-epidemiological analysis of Rickettsia parkeri in domestic dogs and Amblyomma ovale ticks in the Atlantic rainforest of Northeast Brazil [PDF]
Revista Brasileira de Parasitologia VeterináriaIn Brazil, spotted fever (SF) is caused by two species of Rickettsia, both of which are transmitted by Amblyomma ticks: Rickettsia rickettsii, which results in severe and often fatal cases, and Rickettsia parkeri, which causes a mild illness.
Michellin Pereira de Albuquerque +6 more
doaj +2 more sources
Establishment of Amblyomma maculatum Ticks and Rickettsia parkeri the Northeastern United States [PDF]
Emerging Infectious DiseasesWe document a case of Rickettsia parkeri rickettsiosis in a patient in Connecticut, USA, who became ill after a bite from a Gulf Coast tick (Amblyomma maculatum). We used PCR to amplify R. parkeri DNA from the detached tick.
Goudarz Molaei +3 more
doaj +2 more sources
Rickettsia parkeri infection modulates the sialome and ovariome of the Gulf coast tick, Amblyomma maculatum [PDF]
Frontiers in Microbiology, 2022 The Gulf Coast tick, Amblyomma maculatum, is a vector of several tick-borne pathogens, including Rickettsia parkeri. The ability of R. parkeri to persist within the tick population through transovarial and transstadial transmission, without apparently ...
Melina Garcia Guizzo +4 more
doaj +2 more sources
A new focus of spotted fever caused by Rickettsia parkeri in Brazil [PDF]
Revista do Instituto de Medicina Tropical de São Paulo, 2022 Spotted fever (SF) is a tick-borne zoonosis caused by bacteria of the genus Rickettsia . The disease varies in severity from mild clinical forms to severe cases.
Nicole Oliveira de Moura Martiniano +6 more
doaj +2 more sources
Rickettsia parkeri as a Probable Agent of Mild Spotted-Fever Group Rickettsiosis Identified by Seroreactivity in Villeta, Colombia [PDF]
Tropical Medicine and Infectious DiseaseSpotted fever group (SFG) rickettsioses are emerging zoonotic diseases of increasing relevance in Latin America, yet the specific species involved in human infections remain poorly defined in many endemic regions.
Carlos Ramiro Silva-Ramos +6 more
doaj +2 more sources
Rickettsia parkeri and Candidatus Rickettsia andeanae in Amblyomma maculatum Group Ticks [PDF]
Emerging Infectious Diseases, 2020 We determined prevalence of Rickettsia spp. in 172 ticks of the Amblyomma maculatum group collected from 16 urban sites in Oklahoma City, Oklahoma, USA, during 2017 and 2018.
Bruce H. Noden +2 more
doaj +2 more sources