Results 61 to 70 of about 7,496 (242)

A Multiplex PCR assay for a differential diagnostic of rickettsiosis, Lyme disease and scrub typhus

Journal of Vector Borne Diseases, 2022
Background & objectives: Coexistence of tick-borne diseases in some regions in Latin America makes the diagnosis difficult due to shared initial signs and symptoms. Rickettsiosis, Lyme disease and recently, scrub typhus are gaining more importance.
Gaspar Peniche-Lara, Isamara Moo-Salazar, Karla Dzul-Rosado   +2 more
doaj   +1 more source

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

Isolation of a New Orientia tsutsugamushi Serotype [PDF]

Microbiology and Immunology, 1997
AbstractOrientia tsutsugamushi, the etiological agent of scrub typhus, is an antigenically diverse organism and many serologically distinct strains have been identified. The 56 kDa protein of O. tsutsugamushi, a major protein in the outer membrane, has been thought to be responsible for this antigenic variability. A strain of O.
S Y, Seong, S G, Park, H R, Kim, T H, Han, J S, Kang, M S, Choi, I S, Kim, W H, Chang   +7 more
openaire   +2 more sources

A Comprehensive Study of Biohopanoid Production in Alphaproteobacteria: Biosynthetic, Chemotaxonomical, and Geobiological Implications

Geobiology, Volume 23, Issue 6, November/December 2025.
ABSTRACT Bacteriohopanepolyol derivatives (BHPDs) and dia‐ and catagenetic products formed from these bacterial membrane modifiers are extensively used as biomarkers in molecular ecological and geoscience studies. Some BHPDs can be assigned to specific phylogenetic bacterial groups. With the vastly increasing availability of complete bacterial genomes,
Jaap S. Sinninghe Damsté, Michel Koenen, Vera Thiel, Nora Richter, Ellen C. Hopmans, Nicole J. Bale   +5 more
wiley   +1 more source

The Effect of Climate Change on Emergence and Evolution of Zoonotic Diseases in Asia

Zoonoses and Public Health, Volume 72, Issue 7, Page 587-611, November 2025.
ABSTRACT As the climate of Asia changes under the influence of global warming, the incidence and spatial distribution of known zoonoses will evolve, and new zoonoses are expected to emerge as a result of greater exposure to organisms which currently occur only in wildlife.
Roger S. Morris, Masako Wada
wiley   +1 more source

Variation in Small Mammal Species Composition and the Occurrence of Parasitic Mites in Two Landscapes in a Scrub Typhus Endemic Region of Western Yunnan Province, China

Ecology and Evolution, Volume 15, Issue 10, October 2025.
Yunnan Province, the most serious scrub typhus endemic areas in China, provides abundant ecological resources that sustain parasite and host populations. The distribution of vector‐borne diseases is driven by interactions between hosts, vectors and the environment, revealing critical ecological dynamics.
Yun‐Yan Luo, Jia‐Xiang Yin, Zong‐Ti Shao, Zeng‐Kan Liu, Shou‐Qin Yin, Jiang‐Li Lu, Jin‐Chun Li, Rong Wei, Alan Frederick Geater   +8 more
wiley   +1 more source

Gaps and inconsistencies in the current knowledge and implementation of biosafety and biosecurity practices for rickettsial pathogens

BMC Infectious Diseases
Introduction Rickettsia spp. and Orientia spp. are the causes of neglected infections that can lead to severe febrile and systemic illnesses in humans. Implementing proper biosafety practices when handling these pathogens is crucial to ensure a safe and ...
Stuart D. Blacksell, Khanh Kim Le, Artharee Rungrojn, Jantana Wongsantichon, John Stenos, Stephen R. Graves, Nicholas P.J. Day   +6 more
doaj   +1 more source

Down‐Regulation of gp96 by Orientia tsutsugamushi [PDF]

Microbiology and Immunology, 2004
Abstractgp96 plays a central role in innate as well as acquired immunity, maturation and chemotaxis of dendritic cells, Ab production, and cross‐priming, and is a peptide acceptor in endoplasmic reticulum and an accessory to peptide loading of MHC class I molecules.
Nam-Hyuk, Cho, Cheol-Young, Choi, Seung-Yong, Seong   +2 more
openaire   +2 more sources

The Endosymbiont Consortia of Two Cixiidae Planthoppers Reveal an Ancient Symbiosis With ‘Candidatus Mirabilia Symbiotica’

Environmental Microbiology Reports, Volume 17, Issue 5, October 2025.
Many insects harbour ancient beneficial endosymbionts that produce essential nutrients. Two planthopper species from the Cixiidae family harbour different tripartite endosymbiont consortia, including a previously unknown and likely ancient Gammaproteobacterium in addition to Karelsulcia and Vidania.
Jessica Dittmer, Mathieu Mahillon, Christophe Debonneville, Franco Faoro, Xavier Foissac, Olivier Schumpp, Bessem Chouaia   +6 more
wiley   +1 more source

A case of Henoch-Schönlein purpura associated with scrub typhus

BMC Infectious Diseases, 2020
Background Henoch-Schönlein purpura (HSP) may be caused by several allergens. However, to date, HSP caused by Orientia tsutsugamushi has not been reported. Here, we report an unusual rash with features of HSP caused by Orientia tsutsugamushi.
Jae Hyoung Im, Suk Jin Choi, Moon-Hyun Chung, Seung Yun Lee, Young Kyoung Park, Hea Yoon Kwon, Ji Hyeon Baek, Jin-Soo Lee   +7 more
doaj   +1 more source