title: Genetic identification of rickettsial isolates from fatal cases of Brazilian spotted fever and comparison with Rickettsia rickettsii isolates from the American continents.
abstract: Fifteen bacterial isolates from spotted fever group rickettsiosis in Brazil were genetically identified as Rickettsia rickettsii. In a phylogenetic analysis with other R. rickettsii isolates from GenBank, the Central/South American isolates showed low polymorphism and formed a clade distinct from two North American clades, with the North American clades having greater in-branch polymorphism.
authors: Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brazil labruna@usp.br.
authors: Marcelo B
authors: MB
authors: Labruna
authors: Instituto Adolfo Lutz, Secretaria de Estado da Saúde, São Paulo, SP, Brazil.
authors: Fabiana C P
authors: FC
authors: Santos
authors: Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brazil.
authors: Maria
authors: M
authors: Ogrzewalska
authors: Instituto Adolfo Lutz, Secretaria de Estado da Saúde, São Paulo, SP, Brazil Superintendência de Controle de Endemias, Secretaria de Estado da Saúde, São Paulo, SP, Brazil.
authors: Elvira M M
authors: EM
authors: Nascimento
authors: Instituto Adolfo Lutz, Secretaria de Estado da Saúde, São Paulo, SP, Brazil.
authors: Silvia
authors: S
authors: Colombo
authors: Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brazil.
authors: Arlei
authors: A
authors: Marcili
authors: Coordenaria de Vigilância em Saúde, Secretaria Municipal de Saúde, Campinas, SP, Brazil.
authors: Rodrigo N
authors: RN
authors: Angerami
mesh_terms: D001938:Brazil; D016000:Cluster Analysis; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D005838:Genotype; D006801:Humans; D008969:Molecular Sequence Data; D010802:Phylogeny; D011110:Polymorphism, Genetic; D012284:Rickettsia rickettsii / Q000145:classification* / Q000235:genetics* / Q000302:isolation & purification; D012373:Rocky Mountain Spotted Fever / Q000382:microbiology*; D017422:Sequence Analysis, DNA; D017385:Sequence Homology
chemical_list: D004269:DNA, Bacterial