Fatal Human Infection with Rickettsia rickettsii, Yucatán, Mexico
Emerging 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
Aerosol infection of monkeys with Rickettsia rickettsii. [PDF]
Bacteriological Reviews, 1966 S Saslaw, H N Carlisle
openalex +4 more sources
Rickettsia rickettsii Co-feeding Transmission among Amblyomma aureolatum Ticks [PDF]
Emerging Infectious Diseases, 2018 Amblyomma aureolatum ticks are vectors of Rickettsia rickettsii, the etiologic agent of Rocky Mountain spotted fever in Brazil. Maintenance of R. rickettsii in nature depends on horizontal transmission along tick generations.
Jonas Moraes-Filho +4 more
doaj +2 more sources
External layers of Rickettsia prowazekii and Rickettsia rickettsii: occurrence of a slime layer [PDF]
Infection and Immunity, 1978 Using a simple specific-antibody stabilization procedure on organisms gently liberated from their host cells, we have demonstrated by electron microscopy that Rickettsia prowazekii and Rickettsia rickettsii possess a coat of variable thickness, external to the outer leaflet of the cell wall and the structure designated by others as a "microcapsule ...
D J Silverman +3 more
openalex +5 more sources
Genome sequence of the endosymbiont Rickettsia peacockii and comparison with virulent Rickettsia rickettsii: identification of virulence factors. [PDF]
PLoS ONE, 2009 Rickettsia peacockii, also known as the East Side Agent, is a non-pathogenic obligate intracellular bacterium found as an endosymbiont in Dermacentor andersoni ticks in the western USA and Canada.
Roderick F Felsheim +2 more
doaj +5 more sources
Nitric Oxide Inhibition of Rickettsia rickettsii. [PDF]
Infect Immun, 2021 Rickettsia rickettsii , the causative agent of Rocky Mountain spotted fever, is an enzootic, obligate, intracellular bacterial pathogen. Nitric oxide (NO) synthesized by the inducible NO synthase (iNOS) is a potent antimicrobial component of innate immunity and has been implicated in the control of virulent ...
Fitzsimmons LF, Clark TR, Hackstadt T.
europepmc +4 more sources
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.
David H. Walker, Frederick W. Henderson
openalex +4 more sources
The intracellular bacterium Rickettsia rickettsii exerts an inhibitory effect on the apoptosis of tick cells. [PDF]
Parasit Vectors, 2020 Martins LA +12 more
europepmc +3 more sources
VIRULENT-AVIRULENT CONVERSIONS OF Rickettsia Rickettsii IN VITRO [PDF]
Proceedings of the National Academy of Sciences, 1955 James H. Gilford, Winston H. Price
openalex +4 more sources
Experimental Infection of Amblyomma aureolatum Ticks with Rickettsia rickettsii
Emerging Infectious Diseases, 2011 We experimentally infected Amblyomma aureolatum ticks with the bacterium Rickettsia rickettsii, the etiologic agent of Rocky Mountain spotted fever (RMSF). These ticks are a vector for RMSF in Brazil. R.
Marcelo B. Labruna +8 more
doaj +3 more sources