Results 51 to 60 of about 7,697 (229)

Rickettsial spotted fever in capoeirão Village, Itabira, Minas Gerais, Brazil Rickettsiose do grupo da febre maculosa na Vila de Capoeirão, Itabira, Minas Gerais, Brasil

Revista do Instituto de Medicina Tropical de São Paulo, 2008
The present study investigated the infection by spotted fever rickettsia in an endemic area for Brazilian spotted fever (BSF; caused by Rickettsia rickettsii) in Minas Gerais State, Brazil.
Manoella Campostrini Barreto Vianna, Maurício Claudio Horta, Luis Antônio Sangioni, Adriana Cortez, Rodrigo Martins Soares, Cláudio Lisias Mafra, Márcio Antônio Moreira Galvão, Marcelo Bahia Labruna, Solange Maria Gennari   +8 more
doaj   +1 more source

Evaluation of changes to the Rickettsia rickettsii transcriptome during mammalian infection. [PDF]

PLoS One, 2017
The lifecycle of Rickettsia rickettsii includes infection of both mammalian and arthropod hosts, with each environment presenting distinct challenges to survival. As such, these pathogens likely have distinctive transcriptional strategies for infection of each host.
Riley SP, Pruneau L, Martinez JJ.
europepmc   +6 more sources

Comparative Susceptibility of Different Populations of Amblyomma sculptum to Rickettsia rickettsii. [PDF]

Front Physiol, 2019
The bacterium Rickettsia rickettsii is the etiological agent of Brazilian spotted fever (BSF), which is transmitted in Brazil mainly by the tick Amblyomma sculptum. Herein, larvae and nymphs of six populations of A. sculptum were exposed to R. rickettsii by feeding on needle-inoculated guinea pigs, and thereafter reared on uninfected guinea pigs or ...
Gerardi M, Ramírez-Hernández A, Binder LC, Krawczak FS, Gregori F, Labruna MB.   +5 more
europepmc   +6 more sources

Transformation Frequency of a mariner-Based Transposon in Rickettsia rickettsii [PDF]

Journal of Bacteriology, 2011
ABSTRACTTransformation frequencies of amariner-based transposon system inRickettsia rickettsiiwere determined using a plaque assay system for enumeration and isolation of mutants. Sequence analysis of insertion sites in bothR. rickettsiiandR. prowazekiiindicated that insertions were random.
Amanda M. Lackey, Betsy Kleba, David O. Wood, Ted Hackstadt, Erika I. Lutter, Lonnie O. Driskell, Tina R. Clark, Craig Martens   +7 more
openaire   +3 more sources

Upscaling the surveillance of tick-borne pathogens in the French Caribbean Islands [PDF]

, 2020
Despite the high burden of vector-borne disease in (sub)tropical areas, few information are available regarding the diversity of tick and tick-borne pathogens circulating in the Caribbean.
Albina, Emmanuel, Aprelon, Rosalie, Delannoy, Sabine, Devillers, Elodie, Galon, Clémence, Gondard, Mathilde, Moutailler, Sara, Pinarello, Valérie, Pradel, Jennifer, Vayssier-Taussat, Muriel   +9 more
core   +2 more sources

Newly Recognized Spotted Fever Group Rickettsia as Cause of Severe Rocky Mountain Spotted Fever–Like Illness, Northern California, USA

Emerging Infectious Diseases
The incidence of spotted fever group (SFG) rickettsioses in the United States has tripled since 2010. Rocky Mountain spotted fever, the most severe SFG rickettsiosis, is caused by Rickettsia rickettsii.
Will S. Probert, Monica P. Haw, Aran C. Nichol, Carol A. Glaser, Sarah Y. Park, Laura E. Campbell, Kavita K. Trivedi, Hannah Romo, Megan E.M. Saunders, Anne M. Kjemtrup, Kerry A. Padgett, Jill K. Hacker   +11 more
doaj   +1 more source

Acute febrile illness is associated with Rickettsia spp infection in dogs [PDF]

, 2015
BACKGROUND: Rickettsia conorii is transmitted by Rhipicephalus sanguineus ticks and causes Mediterranean Spotted Fever (MSF) in humans. Although dogs are considered the natural host of the vector, the clinical and epidemiological significance of R ...
A Cascio, A Estrada-Pena, A Mannelli, A Mura, A Ortuno, A Rojas, A Torina, A Torina, A Torina, A Znazen, Alessandra Caprì, AM Gasser, BA Stillman, C Colomba, C Riera, C Rovery, CP Ober, D Otranto, D Otranto, D Otranto, E Beeler, E Sanger, EB Breitschwerdt, F Segura-Porta, FJ Marquez, G Baneth, G Baneth, G Baneth, G Vitale, GB Andrade, GM Giammanco, GM Giammanco, H Inokuma, J Fuente de la, JC Garcia-Garcia, L Solano-Gallego, L Solano-Gallego, L Solano-Gallego, L Solano-Gallego, L Solano-Gallego, L Solano-Gallego, L Solano-Gallego, Laia Solano-Gallego, M Bernabeu-Wittel, M Rene-Martellet, M Sarih, Marco Caldin, Maria Grazia Pennisi, ME Eremeeva, ME Mylonakis, Michele Trotta, ML Levin, ML Levin, N Alexandre, N Cardenosa, NY Salem, P Brouqui, P Brouqui, P Parola, P Parola, PJ Kelly, S Delgado, S Harrus, S Harrus, S Santibanez, SE Little, T Beninati, T Furlanello, Tommaso Furlanello, WL Nicholson   +69 more
core   +2 more sources

Latex-Rickettsia rickettsii test reactivity in seropositive patients [PDF]

Journal of Clinical Microbiology, 1983
In correlating results obtained from a new latex-Rickettsia rickettsii test with results obtained from a reference microimmunofluorescence test for Rocky Mountain spotted fever, we found that for seropositive patients each microimmunofluorescence titer (up to 4,096) was usually double the median titer obtained from the latex-R. rickettsii test.
K E Hechemy, B B Rubin
openaire   +3 more sources

Rickettsia rickettsii isolation from naturally infected Amblyomma parvum ticks by centrifugation in a 24-well culture plate technique [PDF]

Open Veterinary Journal, 2013
Rocky Mountain spotted fever is an acute illness caused by Rickettsia rickettsii (R. rickettsii) and is transmitted by the bite of ticks of the genera Dermacentor, Amblyomma and Rhipicephalus.
K. Dzul-Rosado, G. Peniche-Lara, R. Tello-Martín, J. Zavala-Velázquez, R. de Campos Pacheco, M.B. Labruna, E.C. Sánchez, J. Zavala-Castro   +7 more
doaj  

Rickettsia species infecting Amblyomma ticks from an area endemic for Brazilian spotted fever in Brazil Rickettsia infectando carrapatos Amblyomma de uma área endêmica para febre maculosa Brasileira no Brasil

Revista Brasileira de Parasitologia Veterinária, 2011
This study reports rickettsial infection in Amblyomma cajennense and Amblyomma dubitatum ticks collected in an area of the state of Minas Gerais, Brazil, where Brazilian spotted fever is considered endemic. For this purpose, 400 adults of A.
Elizângela Guedes, Romário Cerqueira Leite, Richard Campos Pacheco, Iara Silveira, Marcelo Bahia Labruna   +4 more
doaj   +1 more source