Results 81 to 90 of about 3,614 (192)

An epidemiological and serological study of Rickettsia in Western Australia

, 2011
The study was aimed at investigating Western Australian rickettsiae, delving deeper into the epidemiology of a recently described rickettsia, Rickettsia gravesii, and any other rickettsiae lurking in the Western Australian bush. Prior to the discovery of
Abdad, Mohammad
core  

Optimization of heat inactivation protocols for Orientia and Rickettsia species

Scientific Reports
Heat treatment, or thermal disinfection, is one of the simplest and most widely used methods for microbial inactivation. Proper heat inactivation protocols are essential to ensure the safe transportation and handling of infectious materials, particularly
Artharee Rungrojn, Mohammad Yazid Abdad, Sandhya Dhawan, Jantana Wongsantichon, Stuart D. Blacksell   +4 more
doaj   +1 more source

Ticks and Tick‐Borne Pathogens Encountered by Dogs and Cats: A North European Perspective

Transboundary and Emerging Diseases, Volume 2025, Issue 1, 2025.
Climate change is increasing the worldwide burden of tick‐borne diseases (TBDs). Dramatic increases in human cases of borreliosis have been reported during the past few decades, including from Finland, located in North Europe. As human exposure to ticks carrying pathogens is increasing, so likely is exposure of dogs and cats.
Jani J. Sormunen, Eero J. Vesterinen, Tero Klemola, Jordi Casal   +3 more
wiley   +1 more source

Fatal complicated infection by Rickettsia conorii: Role of cerebral involvement, antiphospholipid antibodies, and multiple comorbidities

, 2023
An intriguing case of lethal rickettsiosis caused by Rickettsia conorii complicated by brain involvement and the presence anti-phospholipid antibodies is presented and discussed, on the ground of recent literature ...
Vangeli V., Manfredi R., Mastroianni A., Greco F., Greco S., Mauro M. V.   +5 more
core   +1 more source

Hyalomma marginatum in Europe: The Past, Current Status, and Future Challenges—A Systematic Review

Transboundary and Emerging Diseases, Volume 2025, Issue 1, 2025.
Hyalomma marginatum is a prominent tick vector responsible for transmitting various pathogens, including the Crimean–Congo hemorrhagic fever virus (CCHFV), across Europe. This systematic review consolidates findings from 144 publications regarding the geographical distribution of H. marginatum and its associated pathogens.
Seyma S. Celina, Jiří Černý, Zongfu Wu   +2 more
wiley   +1 more source

Rickettsia disrupts and reduces endothelial tight junction protein zonula occludens-1 in association with inflammasome activation

Infection and Immunity
Rickettsia spp. cause life-threatening diseases in humans. The fundamental pathophysiological changes in fatal rickettsial diseases are disrupted endothelial barrier and increased microvascular permeability.
Loka Reddy Velatooru, Esteban Arroyave, Meagan D. Rippee-Brooks, Megan Burch, Ethan Yang, Bing Zhu, David H. Walker, Yang Zhang, Rong Fang   +8 more
doaj   +1 more source

First molecular diagnosis of the human pathogen Rickettsia raoultii and other spotted fever group rickettsiae in Sudanese ixodid ticks from domestic ruminants

Veterinary Medicine and Science, Volume 10, Issue 6, November 2024.
In this manuscript, the authors collected ixodid ticks and examined the presence of Rickettsia species by PCR. By performing sequencing and phylogenetic analysis, the authors identified the presence of four different Rickettsia species in three tick species found on three mammalian hosts.
Nagwa Eisawi, Jabbar Ahmed, Mohammed A. Bakheit, Dina A. Hassan, Mohammed O. Hussien, Abdel Rahim M. El Hussein   +5 more
wiley   +1 more source

Results of Detection Antibodies against Rickettsiae in the Blood Sera at the Omsk Region of Russia and the West-Kazakhstan Region of Republic Kazakhstan

Эпидемиология и вакцинопрофилактика, 2015
Previously, we found high species- and antigenic heterogeneity of spotted fever group rickettsiae circulating in the territories of the Russian Federation. This paper presents the results of the detection of antibodies to R. sibirica and R.
I. E. Samoylenko, N. V. Rudakov, T. A. Reshetnikova, R. A. Egemberdyeva, E. V. Shalamova, S. V. Shtreck, L. V. Kumpan   +6 more
doaj   +1 more source

Rickettsia conorii in dogs with hematological disorders in Marche region: preliminary study

, 2023
Background. Rickettsia conorii are obligate intracellular coccoid and Gram-negative organisms, responsible for Mediterranean spotted fever1. In Mediterranean countries, dogs are natural host of the infection, however, the clinical progression and ...
Alessandra Gavazza, Barbara Castellucci, Sara Mangiaterra, Francesca Guglielmo   +3 more
core  

Detection and characterization of rickettsiae in Western Australia

, 2007
The aim of this study was to address the shortfall in current, in-depth knowledge of Western Australian rickettsiae investigating in particular, the role of native and feral animals as reservoir hosts.
Owen, Helen Clare
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