Results 61 to 70 of about 13,960 (198)
Detection and characterization of rickettsiae in Western Australia [PDF]
, 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
core
Public Health Challenges, Volume 5, Issue 2, June 2026.ABSTRACT Bacteria of the order Rickettsiales comprise a diverse group of obligate intracellular microorganisms that are globally distributed and highly prevalent in tropical and subtropical regions. In South America, these bacteria have been associated with arthropod vectors, such as ticks, fleas, mites, lice, and certain dipterans, as well as with a ...
Cristian J. Zamorano‐Gómez +3 more
wiley +1 more source
Effect of immunosuppression on Rickettsia rickettsii infection in guinea pigs [PDF]
Infection and Immunity, 1978 The role of the immune response in the pathogenesis of Rickettsia rickettsii infection in guinea pigs was investigated by immunosuppression, using antilymphocyte serum. Twenty guinea pigs were inoculated with R. rickettsii, Sheila Smith strain, on day 0. Fifteen animals received antilymphocyte serum on days --1, 0, 2, 4, and 6.
D H, Walker, F W, Henderson
openaire +2 more sources
Human endothelial cell culture plaques induced by Rickettsia rickettsii. [PDF]
, 1982 Primary cultures of human umbilical vein endothelial cells were inoculated with plaque-purified Rickettsia rickettsii. After adsorption of rickettsiae, monolayers were overlaid with medium containing 0.5% agarose.
Edgell, Cora-Jean S. +2 more
core +1 more source
Parasites & Vectors, 2019 Background The aim of this study was to detect and molecularly identify Rickettsia spp. in Rhipicephalus sanguineus (sensu lato) collected from free-roaming dogs in 30 communities from five municipalities in the south of Coahuila State, northern Mexico ...
Aldo I. Ortega-Morales +8 more
doaj +1 more source
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 +9 more
wiley +1 more source
Encefalite por Rickettsia sem exantema: a propósito de um caso clínico
Revista Educação em Saúde, 2018 Objective:: To report a rare case of Rickettsia encephalitis without exanthema. Case report:A 44-year-old male patient, a rural worker, presented daily fever, myalgia and asthenia progressing with left eye amaurosis, ataxia, mental ...
Talita Fernandes Araújo +2 more
doaj +1 more source
Insect Science, Volume 33, Issue 1, Page 396-406, February 2026.Lipid analysis of field‐collected ticks unveiled a complex population structure and supports the potential for several stages to overwinter. Abstract The seasonality of Haemaphysalis longicornis in the United States comprises overlapping life stages in the spring and summer.
Matthew Bickerton +2 more
wiley +1 more source
Veterinary Medicine and Science, Volume 12, Issue 1, January 2026.Noncardiogenic pulmonary oedema (suspected uraemic pneumonitis) secondary to acute kidney injury in a dog. This case suggests that noncardiogenic pulmonary oedema may have been triggered by uraemia and systemic inflammation, and that haemodialysis may have contributed to pulmonary recovery by alleviating the uraemic condition.
Se‐Hoon Kim +7 more
wiley +1 more source
Ecology, biology and distribution of spotted-fever tick vectors in Brazil
Frontiers in Cellular and Infection Microbiology, 2013 Spotted-fever caused Rickettsia rickettsii infection is in Brazil the major tick-borne zoonotic disease. Recently a second and milder human rickettsiosis caused by an agent genetically related to R.
Matias Pablo Juan Szabó +2 more
doaj +1 more source