Results 91 to 100 of about 14,699 (253)

Spotted Fever Group Rickettsiae from Ticks Captured in Sudan

Japanese Journal of Infectious Diseases, 2004
Ticks were collected from ruminants in various areas of Sudan in 1998 and 2000. Primer pairs of rickettsial citrate synthase gene (gltA) and a spotted fever group (SFG) rickettsial 190-kDa surface antigen gene (rompA), respectively, were used for identification. Polymerase chain reaction (PCR)-positive products were used for DNA sequencing.
Chiharu, Morita, Abdel Rahim Mohamed, El Hussein, Etsurou, Matsuda, Khalil Mohamed Ali, Abdel Gabbar, Yasukazu, Muramatsu, Magdi Badawi, Abdel Rahman, Ali Mohamed Hassan, Eleragi, Shawgi Mohamed, Hassan, Agnes Mumbi, Chitambo, Hiroshi, Ueno   +9 more
openaire   +2 more sources

Rickettsias del grupo de las fiebres manchadas en garrapatas del género Amblyomma, capaces de infestar humanos, en áreas rurales del noroeste de Argentina [PDF]

, 2015
This work was performed to detect Rickettsia species of the spotted fever group in Amblyomma ticks likely to infest humans in rural areas from northwestern Argentina.
Nava, Santiago, Saracho Bottero, María Noelia, Tarragona, Evelina Luisa   +2 more
core  

Metagenomic profiling of ticks: Identification of novel rickettsial genomes and detection of tick-borne canine parvovirus [PDF]

, 2019
Background: Across the world, ticks act as vectors of human and animal pathogens. Ticks rely on bacterial endosymbionts, which often share close and complex evolutionary links with tick-borne pathogens.
Abdeen, Ziad, Abu Shamma, Omar, Al-Jawabreh, Amer, Ereqat, Suheir, Hall, Holly E., Nasereddin, Abedelmajeed, Pallen, Mark J., Ravi, Anuradha, Taylan Ozkan, Aysegul   +8 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, Volume 72, Issue 8, Page 697-705, December 2025.
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

Emerging spotted fever group rickettsiae in ticks, northwestern China

Ticks and Tick-borne Diseases, 2016
We report Rickettsia conorii subsp. indica, Candidatus R. barbariae and R. massiliae in Rhipicephalus turanicus from sheep around the Taklamakan desert, northwestern China. The topology of the phylogenetic trees produced from the maximum likelihood (ML) analyses of the ompA-gltA-rrs-geneD-ompB concatenated sequence data was very similar to that of the ...
Guo, Li-Ping, Jiang, Su-Hua, Liu, Dan, Wang, Shi-Wei, Chen, Chuang-Fu, Wang, Yuan-Zhi   +5 more
openaire   +2 more sources

Spotted Fever Group Rickettsiae in Inner Mongolia, China, 2015–2016 [PDF]

Emerging Infectious Diseases, 2018
We found Rickettsia raoultii infection in 6/261 brucellosis-negative patients with fever of unknown origin in brucellosis-endemic Inner Mongolia, China. We further identified Hyalomma asiaticum ticks associated with R. raoultii, H. marginatum ticks associated with R. aeschlimannii, and Dermacentor nuttalli ticks associated with both rickettsiae species
Gaowa, Wulantuya, Xuhong Yin, Shengchun Guo, Chunlian Ding, Minzhi Cao, Hiroki Kawabata, Kozue Sato, Shuji Ando, Hiromi Fujita, Fumihiko Kawamori, Hongru Su, Masahiko Shimada, Yuko Shimamura, Shuichi Masuda, Norio Ohashi   +15 more
openaire   +3 more sources

Real-time PCR for early diagnosis of Rickettsia conorii and prompt management in patients with septic shock and multiple organ failure: two case reports [PDF]

, 2015
We herein describe two severe cases of Mediterranean spotted fever caused by Rickettsia conorii. The ar- ticle presents polymerase chain reaction-restriction analysis as an early diagnostic tool for rickettsiosis caused by spotted fever group Rickettsiae.
BONURA, Celestino, DI CARLO, Paola, Dones,P, GIAMMANCO, Anna, GIARRATANO, Antonino, MONTALTO, Francesca, RAINERI, Santi Maurizio, TRIZZINO, Marcello   +7 more
core  

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

Differences in Intracellular Fate of Two Spotted Fever Group Rickettsia in Macrophage-Like Cells

Frontiers in Cellular and Infection Microbiology, 2016
Spotted fever group (SFG) rickettsiae are recognized as important agents of human tick-borne diseases worldwide, such as Mediterranean spotted fever (Rickettsia conorii) and Rocky Mountain spotted fever (Rickettsia rickettsii).
Pedro Curto, I. Simões, Sean P. Riley, J. Martínez   +3 more
semanticscholar   +1 more source

Prevalence and Identification of Livestock Tick by Sex Ratio and Host in Tehran Province

Veterinary Medicine and Science, Volume 11, Issue 6, November 2025.
This study identified tick species infesting livestock and poultry in Tehran Province, revealing a female‐biased sex ratio and sheep as the most infested hosts. Rhipicephalus sanguineus sensu lato was the dominant species. These findings underscore the need for host‐targeted tick control to mitigate disease transmission and economic losses.
Ebrahim Abbasi
wiley   +1 more source