RESUMO
We conducted surveillance studies in Sinaloa, Mexico, to determine the circulation of tick-borne relapsing fever spirochetes. We collected argasid ticks from a home in the village of Camayeca and isolated spirochetes. Genomic analysis indicated that Borrelia turicatae infection is a threat to those living in resource-limited settings.
Assuntos
Infecções por Borrelia , Borrelia , Febre Recorrente , Carrapatos , Animais , México/epidemiologia , Borrelia/genética , Febre Recorrente/epidemiologia , Infecções por Borrelia/epidemiologiaRESUMO
Ehrlichia minasensis is a new pathogenic bacterial species that infects cattle, and Borrelia theileri causes bovine borreliosis. We detected E. minasensis and B. theileri DNA in cattle from southwestern Colombia by using PCR. E. minasensis and B. theileri should be considered potential etiologies of febrile syndrome in cattle from Colombia.
Assuntos
Infecções por Borrelia , Doenças dos Bovinos , Animais , Infecções por Borrelia/veterinária , Bovinos , Doenças dos Bovinos/epidemiologia , Doenças dos Bovinos/microbiologia , Colômbia/epidemiologia , DNA , Reação em Cadeia da PolimeraseRESUMO
We amplified Ehrlichia and Anaplasma DNA from Amblyomma dubitatum tick-infested capybaras (Hydrochoerus hydrochaeris) in southern Brazil. Sequencing of 16S rRNA, sodB, and groEL indicated a novel Ehrlichia species, and sequencing of 16S rRNA from 2 capybaras indicated a novel Anaplasma species. The tick vectors remain unknown.
Assuntos
Anaplasmataceae , Anaplasma/genética , Anaplasmataceae/genética , Animais , Brasil/epidemiologia , Ehrlichia/genética , Filogenia , RNA Ribossômico 16S/genética , RoedoresRESUMO
We describe the clinical, serologic, and molecular findings of a new human rickettsiosis in Colombia. Antibodies against Rickettsia spp. were detected. PCR showed amplification of genes for R. parkeri strain Atlantic Rainforest. This new rickettsiosis of minor virulence could explain some of the undifferentiated acute febrile diseases in Colombia.
Assuntos
Ixodidae , Infecções por Rickettsia , Rickettsia , Animais , Colômbia/epidemiologia , Humanos , Floresta Úmida , Rickettsia/genética , Infecções por Rickettsia/diagnóstico , Infecções por Rickettsia/epidemiologiaRESUMO
We report a fatal case of Rocky Mountain spotted fever (RMSF) in a man in Brazil without recent history of tick bites or environmental exposure. He received an accidental needlestick while working as a nurse. The nurse and his patient died. Both cases were confirmed as RMSF by molecular methods.