We report molecular detection of Rickettsia africae in Amblyomma ovale ticks from Nicaragua and a novel rickettsial strain in an A. triste tick. Of 146 ticks from dogs, 16.4% were Rickettsia PCR positive. The presence of Rickettsia spp. in human-biting ticks in Nicaragua may pose a public health concern.
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http://dx.doi.org/10.3201/eid2402.161901 | DOI Listing |
Animals (Basel)
November 2022
Instituto de Investigación de la Cadena Láctea (IdICaL), CONICET-INTA, Ruta 34 km 227, 2300 Rafaela, Santa Fe, Argentina.
This study presents the molecular detection of Rickettsia andeanae and sp. in Aragão, 1908 (Acari: Ixodidae) collected on a large hairy armadillo ( (Desmarest, 1804)). On 12 October 2020, a specimen of was found dead on the road in Río Negro province, Argentina.
View Article and Find Full Text PDFSyst Parasitol
June 2021
Laboratorio de Vectores y enfermedades transmitidas, Departamento de Ciencias Biológicas, Facultad de Veterinaria, Universidad de la República, CENUR Litoral Norte, Salto, ST, Uruguay.
Based on tick specimens collected recently in Mexico, Nicaragua, Panama and Brazil, we provide morphological descriptions of the nymph and adults of Ornithodoros clarki Jones & Clifford, 1972 from the first three countries, and the larva and nymph of Ornithodoros rondoniensis (Labruna, Terassini, Camargo, Brandão, Ribeiro & Estrada-Peña, 2008) from Brazil. Also, an analysis of mitochondrial 16S rDNA sequences was performed to analyze the phylogenetic relationships of these tick species. Adults and nymphs of O.
View Article and Find Full Text PDFTicks Tick Borne Dis
May 2021
Laboratory of Virology and Rickettsial Infections, Veterinary Hospital, Federal University of Mato Grosso (UFMT), Av. Fernando Correa da Costa 2367, Cuiabá, MT, 78090-900, Brazil. Electronic address:
Ticks Tick Borne Dis
September 2020
Laboratorio de Vectores y enfermedades transmitidas, Facultad de Veterinaria, Universidad de la República, CENUR Litoral Norte - Salto, Rivera 1350, CP 50000 Salto, ST, Uruguay.
Larvae of Ornithodoros knoxjonesi collected at five localities in three countries were studied using morphological and molecular methods to confirm this species' taxonomic validity. The larva of O. knoxjonesi is characterized as having 14 pairs of dorsal setae, eight pairs of ventral setae, plus a posteromedian seta; an elongate dorsal plate, tapered anteriorly; and a hypostome that is narrower near its midlength, with posteriorly projecting denticles.
View Article and Find Full Text PDFActa Trop
December 2019
Vector Borne Disease Diagnostic Laboratory, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA.
Certain vector-borne organisms serve as etiological agents of equine disease. After previously identifying a new Ehrlichia species in horses from Mérida, we aimed to determine the infection frequency and screen for a wide range of vector-borne organisms from 93 tick-exposed, Ehrlichia seropositive horses in this region. PCR assays were performed to identify infection by organisms within the following genera: Anaplasma, Babesia, Bartonella, Ehrlichia, Leishmania, Mycoplasma, Neorickettsia, Rickettsia and Theileria.
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