Results 31 to 40 of about 21,258 (244)

Detecção de anticorpos anti-Rickettsia rickettsii em cães residentes em área negligenciada no município de São Paulo, SP, Brasil [PDF]

open access: yesArquivo Brasileiro de Medicina Veterinária e Zootecnia, 2020
RESUMO A febre maculosa brasileira (FMB), descrita inicialmente nos Estados Unidos como febre maculosa das Montanhas Rochosas, é uma antropozoonose relatada apenas no continente americano e causada pela bactéria Rickettsia rickettsii.
Z.Ê.S. Souza   +9 more
doaj   +2 more sources

Clinical and serological evaluation of capybaras (Hydrochoerus hydrochaeris) successively exposed to an Amblyomma sculptum-derived strain of Rickettsia rickettsii [PDF]

open access: yesSci Rep, 2020
Brazilian spotted fever (BSF), caused by Rickettsia rickettsii, is the most lethal tick-borne disease in the western hemisphere. In Brazil, Amblyomma sculptum ticks are the main vector. Capybaras (Hydrochoerus hydrochaeris), the largest living rodents of
Alejandro Ramírez-Hernández   +8 more
semanticscholar   +2 more sources

Plaque Assay for Rickettsia rickettsii [PDF]

open access: bronzeJournal of Bacteriology, 1969
A plaque technique for the assay of Rickettsia rickettsii is described. The method employs primary chick or green monkey kidney monolayer cell cultures with either an agarose or special Noble agar overlay. Plaques were counted in 6 days and resultant titers correlated well with ld 50
Edmund H. Weinberg   +2 more
openalex   +4 more sources

Fatal Human Infection with Rickettsia rickettsii, Yucatán, Mexico

open access: yesEmerging Infectious Diseases, 2006
The first fatal Rickettsia rickettsii infection was diagnosed in the southwest of Mexico. The patient had fever, erythematous rash, abdominal pain, and severe central nervous system involvement with convulsive crisis. The diagnosis of R.
Jorge E. Zavala-Castro   +8 more
doaj   +3 more sources

Atypical fulminant Rickettsia rickettsii infection (Brazilian spotted fever) presenting as septic shock and Adult Respiratory Distress Syndrome [PDF]

open access: goldBrazilian Journal of Infectious Diseases, 2002
Brazilian spotted fever, caused by Rickettsia rickettsii, has been increasingly reported in Brazil especially in the southeastern states. The severe and fulminant forms of the disease are not unusual but most of the reported fatal cases have shown some ...
Costa Paulo Sérgio Gonçalves da   +3 more
doaj   +2 more sources

Antibodies for Rickettsia spp. in patients with negative serology for dengue virus, leptospirosis, and meningococcal disease in municipalities of São Paulo State, Brazil [PDF]

open access: yesRevista da Sociedade Brasileira de Medicina Tropical, 2017
INTRODUCTION Brazilian spotted fever is an infectious disease with a high mortality rate if not treated early. Differential diagnosis is difficult, as the first clinical signs are non-specific and can be confused with other diseases.
Juliana Anacleto Cabral Prata   +7 more
doaj   +3 more sources

VIRULENT-AVIRULENT CONVERSIONS OF Rickettsia Rickettsii IN VITRO [PDF]

open access: greenProceedings of the National Academy of Sciences, 1955
James H. Gilford, Winston H. Price
openalex   +4 more sources

Detection of Bartonella spp. in dogs after infection with Rickettsia rickettsii [PDF]

open access: yesJ Vet Intern Med, 2019
Background Dynamics of infection by Bartonella and Rickettsia species, which are epidemiologically associated in dogs, have not been explored in a controlled setting. Objectives Describe an outbreak investigation of occult Bartonella spp. infection among
Erin W Lashnits   +9 more
semanticscholar   +2 more sources

Minimal Duration of Tick Attachment Sufficient for Transmission of Infectious Rickettsia rickettsii (Rickettsiales: Rickettsiaceae) by Its Primary Vector Dermacentor variabilis (Acari: Ixodidae): Duration of Rickettsial Reactivation in the Vector Revisited [PDF]

open access: yesJ Med Entomol, 2019
It has been reported that starving ticks do not transmit spotted fever group Rickettsia immediately upon attachment because pathogenic bacteria exist in a dormant, uninfectious state and require time for ‘reactivation’ before transmission to a ...
M. Levin   +5 more
semanticscholar   +2 more sources

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