Results 81 to 90 of about 21,637 (264)

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

Endothelial Cell Proteomic Response to Rickettsia conorii Infection Reveals Activation of the Janus Kinase (JAK)-Signal Transducer and Activator of Transcription (STAT)-Inferferon Stimulated Gene (ISG)15 Pathway and Reprogramming Plasma Membrane Integrin/Cadherin Signaling [PDF]

, 2015
Free PMC Article: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4762516/Rickettsia conorii is the etiologic agent of Mediterranean spotted fever, a re-emerging infectious disease with significant mortality.
Bechah, Bell, Chan, Clifton, Colonne, Colonne, Cox, Damås, Dignat-George, Feng, George, Heinzen, Jerrells, Kleba, Kulig, Li, Li, Liu, Martinez, Mi, Old, Paoletti, Renesto, Rydkina, Sadygov, Sahni, Santucci, Schaechter, Sporn, Sporn, Sporn, Sporn, Starkey, Teysseire, Valbuena, Walker, Walker, Walker, Walker, Whitworth, Zhao, Zhao, Zhao, Zybailov   +43 more
core   +1 more source

Rickettsial neuroretinitis: A report of 2 cases

American Journal of Ophthalmology Case Reports, 2021
Purpose: The authors present two cases of neuroretinitis caused by Rickettsia rickettsii infection. Observations: Case 1 is a 24-year-old male who presented with 2 months of vision loss.
Caroline C. Awh, Akshay S. Thomas
doaj   +1 more source

Latinamerican guidelines of RIICER for diagnosis of tick-borne rickettsioses [PDF]

, 2014
Las rickettsiosis transmitidas por garrapatas son afecciones de distribución mundial, que por diferentes motivos se pueden considerar emergentes y reemergentes.
Abarca, Katia, Labruna, Marcelo Bahia, Mattar, Salim, Nava, Santiago, Oteo, José A., Sousa, Rita de, Venzal, José M., Zavala-Castro, Jorge   +7 more
core   +2 more sources

Automated identification of spotted‐fever tick vectors using convolutional neural networks

Medical and Veterinary Entomology, EarlyView.
We evaluate the performance of convolutional neural networks (CNN) AlexNet, ResNet‐50 and MobileNetV2 for the automated identification of tick species capable of transmitting spotted fever. CNNs achieved accuracy rates of ~90% in identifying ticks and showed sensitivities of 59%–100% according to species, sex, position or image resolution.
Isadora R. C. Gomes, Vinícius L. Miranda, José Fabrício C. Leal, Igor P. Oliveira, Paula J. Silva, Karla Bitencourth, Claudio M. Rodrigues, Liege R. Siqueira, Marcelo B. Labruna, Gilberto S. Gazeta, Marinete Amorim, Rodrigo Gurgel‐Gonçalves   +11 more
wiley   +1 more source

Geospatial Analysis of Rickettsial Species [PDF]

, 2019
Rickettsia species are obligate intracellular, arthropod-borne bacteria with a potential to cause multiple diseases including Rocky Mountain spotted fever (RMSF).
Frank, Amy
core   +3 more sources

High prevalence of Rickettsia africae variants in Amblyomma variegatum ticks from domestic mammals in rural western Kenya: implications for human health [PDF]

, 2014
Tick-borne spotted fever group (SFG) rickettsioses are emerging human diseases caused by obligate intracellular Gram-negative bacteria of the genus Rickettsia.
Ade, Fredrick, Breiman, Robert F., Cleaveland, Sarah, Cutler, Sally J., Feikin, Daniel R., Jiang, Ju, Knobel, Darryn L., Maina, Alice N., Mpoke, Solomon, Ng'ang'a, Zipporah, Njenga, M. Kariuki, Ogola, Eric, Omulo, Sylvia A., Richards, Allen L.   +13 more
core   +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

Canine Spotted Fever Group Rickettsial Seroprevalence as an Indicator for Human Rocky Mountain Spotted Fever Case Rates in Arizona, USA

Zoonoses and Public Health, EarlyView.
ABSTRACT Introduction Rocky Mountain spotted fever (RMSF), a rapidly progressing febrile disease caused by the bacterium Rickettsia rickettsii, is the deadliest tick‐borne disease in the world. Human infection initially results in non‐specific symptoms and, if untreated, can result in death in up to 35% of cases.
Alec Oliva, Rachael Kreisler, Andrea Romkema, Soren Madsen, Haley Furman, Christopher Maag, Charles Schaefer, Jose A. Hernandez, Jung Keun Lee, Michael Quinlan, John VandenBrooks   +10 more
wiley   +1 more source