Results 71 to 80 of about 2,976 (171)

Amblyomma cajennense Sensu Stricto (Fabricius, 1787) and Amblyomma sculptum (Berlese, 1888) Tick Saliva Elicit Immune‐Modulatory Activity in Isolated Murine Macrophages With an Insight Into Proteomic Analysis

Parasite Immunology, Volume 48, Issue 3, March 2026.
ABSTRACT Tick saliva is known to cause immunosuppression and help pathogen transmission. Amblyomma sculptum is a public health concern as a vector of Rickettsia rickettsii. Another close‐related species is Amblyomma cajennense sensu stricto (s.s.). The impact of saliva from these species on murine macrophages remains unclear.
André de Abreu Rangel Aguirre, Valdison Pereira dos Reis, Sulamita da Silva Setúbal, Angélica Lorena Pereira Mendes Carioca, Ketlei Monteiro Tavares, Geisa Paulino Caprini Evaristo, Joseph Albert Medeiros Evaristo, Fábio César Sousa Nogueira, Jansen Fernandes Medeiros, Juliana Pavan Zuliani   +9 more
wiley   +1 more source

Spotted Fever Group Rickettsiae: A Brief Review and a Canadian Perspective [PDF]

Zoonoses and Public Health, 2012
SummarySpotted fever group rickettsioses (SFGR) are infections caused by established and emerging human pathogens worldwide. These rickettsial agents are transmitted to humans via arthropods and may result in mild to severe and potentially fatal diseases. Spotted fever group rickettsioses are characterized by similar clinical features, including fever,
H, Wood, H, Artsob
openaire   +2 more sources

Molecular Screening of Black Flies (Diptera: Simuliidae) for Vector‐Borne Zoonotic Pathogens, South Moravia, Czech Republic

Zoonoses and Public Health, Volume 73, Issue 1, Page 95-106, February 2026.
ABSTRACT Introduction Black flies (Simuliidae) are globally distributed blood‐feeding arthropods and vectors of viral, bacterial, and parasitic pathogens to many animal species, including humans. We investigated the occurrence of selected vector‐borne pathogens in black flies in South Moravia, Czech Republic, and evaluated their possible role in the ...
Silvie Šikutová, Kristína Mravcová, Jan Mendel, Oldřich Šebesta, Bohumil Sak, Nikola Holubová, Martin Kváč, Clifton McKee, Peter H. Adler, D. Otranto, Ivo Rudolf   +10 more
wiley   +1 more source

Study of infection by Rickettsiae of the spotted fever group in humans and ticks in an urban park located in the City of Londrina, State of Paraná, Brazil

Revista da Sociedade Brasileira de Medicina Tropical, 2011
INTRODUCTION: Spotted fevers are emerging zoonoses caused by Rickettsia species in the spotted fever group (SFG). Rickettsia rickettsii is the main etiologic agent of Brazilian spotted fever (BSF) and it is transmitted by Amblyomma spp. ticks.
Roberta Santos Toledo, Katia Tamekuni, Mauro de Freitas Silva Filho, Valeska Bender Haydu, Richard Campos Pacheco, Marcelo Bahia Labruna, John Stephen Dumler, Odilon Vidotto   +7 more
doaj   +1 more source

Plant Virus‐Induced Inheritable Apoptosis Drives Reproductive Costs in Female Insect Vectors to Balance Viral Biparental Transmission

Advanced Science, Volume 13, Issue 5, 27 January 2026.
Rice gall dwarf virus (RGDV), transmitted biparentally by leafhopper vector to their offspring, exploits the capsid protein to induce inheritable ovarian apoptosis via insulin‐driven PI3K/AKT/FoxO signaling axis. This mechanism enhances infection but reduces female reproductive fitness, causing inefficient maternal transmission.
Haibo Wu, Wenqiang Wan, Qingquan Liang, Hengsong Yang, Chengcong Lu, Taiyun Wei, Qian Chen   +6 more
wiley   +1 more source

Genetic Diversity of Theileria parva and Anaplasma spp. Isolated From Ticks Collected From Kiambu County, Kenya

BioMed Research International, Volume 2026, Issue 1, 2026.
Environmental changes and human activities such as deforestation and expansion of agricultural land are increasing tick‐borne diseases including Anaplasmosis, Babesiosis, Ehrlichiosis, and Theileriosis. These diseases, which affect animals, can be transmitted to humans through tick bites.
Peter Gichuki, Caroline Wasonga, Christine Adhiambo, Joel Lutomiah, Poorani Gurumallesh Prabu   +4 more
wiley   +1 more source

A One Health Assessment of Tick and Tick‐Borne Pathogen Diversity and Zoonotic Risk in Hubei Province, Central China

Transboundary and Emerging Diseases, Volume 2026, Issue 1, 2026.
Ticks and tick‐borne pathogens (TBPs) threaten livestock productivity and public health worldwide, and climate–land‐use change is expanding vector habitats, elevating tick‐borne disease risk. However, TBP diversity and risk in Hubei Province, central China, remain insufficiently defined within a One Health framework.
Qian Chen, Ning-wei Ma, Shi-ying Zhu, Dong-fang Li, Xiao-yan Lei, Zi-qian Zhou, Fen Du, Lan He, Jun-long Zhao, Ruofeng Yan   +9 more
wiley   +1 more source

Rickettsiae of the spotted fever group in Hungary.

Folia parasitologica, 1980
Rickettsiae were detected by haemocyte test in 7.2% of Dermacentor marginatus and 4.7% of D. reticulatus ticks collected in Hungary. Six strains of rickettsiae were isolated from positive specimens. These rickettsiae according to CFR are closely related, probably identical with R.
J, Rehácek, J, Nosek, J, Urvölgyi, M, Sztankay   +3 more
openaire   +1 more source

Spotted-Fever GroupRickettsiainDermacentor variabilis, Maryland

Emerging Infectious Diseases, 2004
Three-hundred ninety-two adult Dermacentor variabilis were collected from six Maryland counties during the spring, summer, and fall of 2002. Infection prevalence for spotted fever group Rickettsia was 3.8%, as determined by polymerase chain reaction.
Nicole C. Ammerman, Katherine I. Swanson, Jennifer M. Anderson, Timothy R. Schwartz, Eric C. Seaberg, Gregory E. Glass, Douglas E. Norris   +6 more
openaire   +3 more sources

A 2015 outbreak of flea-borne rickettsiosis in San Gabriel Valley, Los Angeles County, California.

PLoS Neglected Tropical Diseases, 2018
Although flea-borne rickettsiosis is endemic in Los Angeles County, outbreaks are rare. In the spring of 2015 three human cases of flea-borne rickettsiosis among residents of a mobile home community (MHC) prompted an investigation.
Kimberly Nelson, Alice N Maina, Angela Brisco, Chelsea Foo, Curtis Croker, Van Ngo, Rachel Civen, Allen L Richards, Kenn Fujioka, J Wakoli Wekesa   +9 more
doaj   +1 more source