Results 21 to 30 of about 7,443 (219)

Inactivation of rickettsiae [PDF]

open access: yesEuropean Journal of Microbiology and Immunology, 2013
A reliable and complete inactivation is an indispensable premise for any concentration of rickettsiae or for the development of diagnostic strategies based on their antigens. This study deals with the testing of methods to inactivate rickettsiae. Rickettsia honei was used as a model organism.
Hagen, Frickmann, Gerhard, Dobler
openaire   +2 more sources

THE CYTOLOGY OF RICKETTSIAE [PDF]

open access: yesJournal of Experimental Medicine, 1949
Internal structures of rickettsiae seen with phase contrast microscopy and in the electron microscope contain desoxyribonucleic acid and are therefore nuclear structures similar to those found in bacteria. They are minute spherical bodies, either single as in spherical rickettsiae or varying in number from 2 to 4 in rod-shaped forms.
H, RIS, J P, FOX
openaire   +2 more sources

Fluorescence Activated Cell Sorting of Rickettsia prowazekii-Infected Host Cells Based on Bacterial Burden and Early Detection of Fluorescent Rickettsial Transformants. [PDF]

open access: yesPLoS ONE, 2016
Rickettsia prowazekii, the causative agent of epidemic typhus, is an obligate intracellular bacterium that replicates only within the cytosol of a eukaryotic host cell.
Lonnie O Driskell   +4 more
doaj   +1 more source

Novel Rickettsia spp. in two common overwintering North American songbirds

open access: yesEmerging Microbes and Infections, 2022
American robins and dark-eyed juncos migrate across North America and have been found to be competent hosts for some bacterial and viral pathogens, but their contributions to arthropod-borne diseases more broadly remain poorly characterized.
Daniel J. Becker   +10 more
doaj   +1 more source

Detection of Rickettsia hoogstraalii , Rickettsia helvetica , Rickettsia massiliae , Rickettsia slovaca and Rickettsia aeschlimannii in ticks from Sardinia, Italy

open access: yesTicks and Tick-borne Diseases, 2017
Tick-borne diseases represent a large proportion of infectious diseases that have become a world health concern. The presence of Rickettsia spp. was evaluated by standard PCR and sequencing in 123 ticks collected from several mammals and vegetation in Sardinia, Italy.
Chisu, Valentina   +5 more
openaire   +2 more sources

A Rickettsia Case Caused by Rickettsia conorii

open access: yesMikrobiyoloji Bulteni, 2018
Rickettsia species are gram-negative intracellular, small pleomorphic coccobacilli in the Rickettsiaceae family. This genus is serologically and genotypically divided into four groups as spotted fever group, typhus group, Rickettsia belli and Rickettsia canadensis. Rickettsia conorii (R.conorii subsp. conorii) in the spotted fever group was reported to
Bekir, Çelebi   +2 more
openaire   +2 more sources

Rickettsia africae and Novel Rickettsial Strain in Amblyomma spp. Ticks, Nicaragua, 2013

open access: yesEmerging Infectious Diseases, 2018
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.
Helena Vogel   +2 more
doaj   +1 more source

Rickettsia in the Regiment [PDF]

open access: yesJournal of the Royal Army Medical Corps, 1989
A case of Rocky Mountain Spotted Fever (RMSF) is described, together with other cases of pyrexia whose occurrence originally gave the impression of a significant outbreak of the disease in a TA regiment after annual training in the USA. The role of the RMO is considered in such circumstances.
openaire   +2 more sources

Coinfection of Two Rickettsia Species in a Single Tick Species Provides New Insight into Rickettsia-Rickettsia and Rickettsia-Vector Interactions

open access: yesMicrobiology Spectrum, 2022
Rickettsiae are obligate intracellular bacteria that can cause life-threatening illnesses. There is an ongoing debate as to whether established infections by one Rickettsia species preclude the maintenance of the second species in ticks.
Yu-Sheng Pan   +21 more
doaj   +1 more source

Molecular typing of Rickettsia akari

open access: yesИнфекция и иммунитет, 2020
Rickettsia akari, an obligately intracellular bacterium, is the causative agent of the cosmopolitan urban disease rickettsialpox. R. akari is an atypical representative of spotted fever group rickettsiae (SFG) as it is associated with rodent mites rather
M. E. Eremeeva   +5 more
doaj   +1 more source

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