Results 211 to 220 of about 14,699 (253)
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Mediterranean Spotted Fever And Other Spotted Fever Group Rickettsiae
1998Abstract The spotted fever group of rickettsiae consists of 22 serotypes, or species, of Gram-negative, strictly intracellular bacteria which are associated with ticks and have common antigenic properties. Six strains isolated from patients are recognized as pathogens, while nine others have been isolated only from ticks and are ...
Lorenza Beati, Didier Raoult
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Update on Spotted Fever Group Rickettsiae in South Africa
Vector-Borne and Zoonotic Diseases, 2004Until very recently, Mediterranean spotted fever caused by Rickettsia conorii was the only spotted fever group (SFG) rickettsioses recognized in southern Africa. However, increasing medical awareness of tick-borne infections, together with the introduction of improved isolation methods and the availability of molecular techniques, have led to the ...
Anne-Marié, Pretorius +2 more
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Cross-protection between distantly related spotted fever group rickettsiae
Vaccine, 2003Two excellent C3H/HeN mouse models of spotted fever rickettsioses caused by the distantly related organisms, Rickettsia conorii and Rickettsia australis, were utilized to evaluate the possibility of the stimulation of broad cross-protective immunity. Sublethal infection stimulated complete immunity, that is absence of disease, after challenge with a ...
Hui-min, Feng, David H, Walker
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SPOTTED FEVER GROUP RICKETTSIA RETINITIS IN A TRAVELER TO AFRICA.
RETINAL Cases & Brief Reports, 2016To describe a case of rickettsial retinitis in a traveler returning from Africa.Case description.A 67-year-old woman returning from an excursion in the jungles of Africa presented with a 2-day history of floaters and decreased vision in the right eye. In the two preceding weeks, she had experienced fever, malaise, a black eschar on the right elbow, and
R. Duval, P. Merrill
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New records of spotted fever group rickettsiae in Baltic region
Microbes and Infection, 2015Tick-borne rickettsiae are considered to be emerging, but there is still a lack of data on the occurrence and prevalence of the spotted fever group rickettsiae across Europe, especially in the Baltic countries. The aim of the present study was to investigate the presence of Rickettsia spp. in Dermacentor reticulatus and Ixodes ricinus ticks, as well as
Jana, Radzijevskaja +6 more
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Antibodies to spotted fever group rickettsiae in dogs in Croatia
European Journal of Epidemiology, 1995The prevalence of IgG antibodies to spotted fever group rickettsiae was studied by the indirect immunofluorescent antibody assay in a sample of 194 canine sera from different parts of Croatia. Dogs (n = 141) from urban and suburban-semirural environs from the middle part of the eastern coast of Adriatic sea, and dogs (n = 53) from Zagreb, the capital ...
V, Punda-Polić +4 more
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Current tools for the diagnosis and detection of spotted fever group Rickettsia.
Acta Tropica, 2021Nurul Aini Husin, S. Abubakar, J. Khoo
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Seroprevalence of Spotted Fever Group Rickettsiae in Dogs in Germany
Vector-Borne and Zoonotic Diseases, 2015Tick-transmitted spotted fever group Rickettsiae (SFGR) are considered emerging disease pathogens in Europe. To assess the situation in Germany, a seroepidemiologic survey of dogs (n=605, which have never left Germany) was conducted to determine the prevalence of antibodies to SFGR. For this purpose, a commercially available enzyme-linked immunosorbent
Miriam, Wächter +9 more
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Oxidative Cell Injury and Spotted Fever Group Rickettsiae
2005Morphological and biochemical evidence cited herein appear to support the hypothesis that reactive oxygen species play a role in the injury of endothelial cells by R. rickettsii. Cell injury may be initiated by the release of superoxide during rickettsial internalization, and subsequent injury may be caused either by this radical or by other reactive ...
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