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 portions of the rickettsial genes gltA, htrA, ompA, and ompB.
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http://dx.doi.org/10.3201/eid2504.181507 | DOI Listing |
Rev Bras Parasitol Vet
December 2024
Faculdade de Saúde Pública, Universidade de São Paulo - USP, São Paulo, SP, Brasil.
In 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. This study focused on R. parkeri in Amblyomma ovale ticks from the Maciço de Baturité region, Ceará, Northeast Brazil, an area endemic for SF with mild symptoms.
View Article and Find Full Text PDFVet Parasitol Reg Stud Reports
November 2024
Applied Computational Ecology Lab, School of Natural Resources, University of Missouri, Columbia, MO, 65211, United States of America. Electronic address:
Sci Rep
November 2024
Texas A&M AgriLife Research, Uvalde, TX, USA.
Infect Immun
December 2024
Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
Intracellular bacterial pathogens deploy secreted effector proteins that manipulate diverse host machinery and pathways to promote infection. Although many effectors carry out a single function or interaction, there are a growing number of secreted effectors capable of interacting with multiple host factors. However, few effectors secreted by arthropod-borne obligate intracellular species have been linked to multiple host targets.
View Article and Find Full Text PDFJ Med Entomol
October 2024
Louisiana State University School of Veterinary Medicine, Department of Pathobiological Sciences, Baton Rouge, LA, USA.
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