The Experts below are selected from a list of 153 Experts worldwide ranked by ideXlab platform
Elena Kocianová - One of the best experts on this subject based on the ideXlab platform.
-
Isolation of Coxiella burnetii and of an unknown rickettsial organism from Ixodes ricinus ticks collected in Austria
European Journal of Epidemiology, 1994Co-Authors: Rehácek J, B Kaaserer, Urvölgyi J, M. Lukáčová, Kovácová E, Elena KocianováAbstract:Two strains ofCoxiella burnetii and two strains of an unidentified rickettsial organism were isolated for the first time fromIxodes ricinus ticks collected in the Alpine region of Tirol, Austria. TheC. burnetii strains belong to the group of agents causing acute forms of Q fever. The other two strains of isolated rickettsial agent share some antigenic epitopes withC. burnetii andR. prowazekii but they differ from them by their high sensitivity to freezing and refreezing and by poor multiplication in yolk sacs of chick embryos. There is at present no evidence that these Organisms cause human illness and no ecological information is available. We suggest they may be some new species of rickettsiae or Rickettsia-Like Organisms.
-
Isolation ofCoxiella burnetii and of an unknown rickettsial organism fromIxodes ricinus ticks collected in Austria
European Journal of Epidemiology, 1994Co-Authors: J. Řeháček, B Kaaserer, M. Lukáčová, J. Úrvölgyi, E. Kováčová, Elena KocianováAbstract:Two strains of Coxiella burnetii and two strains of an unidentified rickettsial organism were isolated for the first time from Ixodes ricinus ticks collected in the Alpine region of Tirol, Austria. The C. burnetii strains belong to the group of agents causing acute forms of Q fever. The other two strains of isolated rickettsial agent share some antigenic epitopes with C. burnetii and R. prowazekii but they differ from them by their high sensitivity to freezing and refreezing and by poor multiplication in yolk sacs of chick embryos. There is at present no evidence that these Organisms cause human illness and no ecological information is available. We suggest they may be some new species of rickettsiae or Rickettsia-Like Organisms.
J. Řeháček - One of the best experts on this subject based on the ideXlab platform.
-
Isolation ofCoxiella burnetii and of an unknown rickettsial organism fromIxodes ricinus ticks collected in Austria
European Journal of Epidemiology, 1994Co-Authors: J. Řeháček, B Kaaserer, M. Lukáčová, J. Úrvölgyi, E. Kováčová, Elena KocianováAbstract:Two strains of Coxiella burnetii and two strains of an unidentified rickettsial organism were isolated for the first time from Ixodes ricinus ticks collected in the Alpine region of Tirol, Austria. The C. burnetii strains belong to the group of agents causing acute forms of Q fever. The other two strains of isolated rickettsial agent share some antigenic epitopes with C. burnetii and R. prowazekii but they differ from them by their high sensitivity to freezing and refreezing and by poor multiplication in yolk sacs of chick embryos. There is at present no evidence that these Organisms cause human illness and no ecological information is available. We suggest they may be some new species of rickettsiae or Rickettsia-Like Organisms.
-
Rickettsiae and rickettsioses in Portugal
European Journal of Epidemiology, 1991Co-Authors: F. Bacellar, J. Řeháček, M. S. Núncio, A.r. FilipeAbstract:The only rickettsiae recorded in Portugal till now were Rickettsia conorii and Coxiella burnetii . Boutonneuse fever is one of the most important transmissible diseases in Portugal. Though the annual number of cases is not exactly known, it is estimated to be not far from 20,000 in some years. Q fever is the other rickettsiosis widely disseminated throughout the country. The serological prevalence and the incidence of those rickettsioses in Portugal are presented in this communication. In recent research in southern Portugal, about 4,000 adult ticks of nine species were screened by the haemocyte test for rickettsiae and Rickettsia-Like Organisms (RLO). In addition to R. conorii three microscopically different RLO were observed. Two of them, i.e. ovoid and bacillary-like, were positive in the immunofluorescence test with spotted fever ( R. conorii ) antiserum. The first occurred mainly in Rhipicephalus sanguineus ticks, the second one also in other tick species. The latter agent was cultivated in half-engorged R. sanguineus females and in Vero cells. The third organism was found in R. sanguineus , where it exhibited a massive infestation in haemocytes resembling that seen in experimentally infected ticks with C. burnetii , but not being this agent. The investigation of the isolates and their identification and characterization are being continued.
B Kaaserer - One of the best experts on this subject based on the ideXlab platform.
-
Isolation of Coxiella burnetii and of an unknown rickettsial organism from Ixodes ricinus ticks collected in Austria
European Journal of Epidemiology, 1994Co-Authors: Rehácek J, B Kaaserer, Urvölgyi J, M. Lukáčová, Kovácová E, Elena KocianováAbstract:Two strains ofCoxiella burnetii and two strains of an unidentified rickettsial organism were isolated for the first time fromIxodes ricinus ticks collected in the Alpine region of Tirol, Austria. TheC. burnetii strains belong to the group of agents causing acute forms of Q fever. The other two strains of isolated rickettsial agent share some antigenic epitopes withC. burnetii andR. prowazekii but they differ from them by their high sensitivity to freezing and refreezing and by poor multiplication in yolk sacs of chick embryos. There is at present no evidence that these Organisms cause human illness and no ecological information is available. We suggest they may be some new species of rickettsiae or Rickettsia-Like Organisms.
-
Isolation ofCoxiella burnetii and of an unknown rickettsial organism fromIxodes ricinus ticks collected in Austria
European Journal of Epidemiology, 1994Co-Authors: J. Řeháček, B Kaaserer, M. Lukáčová, J. Úrvölgyi, E. Kováčová, Elena KocianováAbstract:Two strains of Coxiella burnetii and two strains of an unidentified rickettsial organism were isolated for the first time from Ixodes ricinus ticks collected in the Alpine region of Tirol, Austria. The C. burnetii strains belong to the group of agents causing acute forms of Q fever. The other two strains of isolated rickettsial agent share some antigenic epitopes with C. burnetii and R. prowazekii but they differ from them by their high sensitivity to freezing and refreezing and by poor multiplication in yolk sacs of chick embryos. There is at present no evidence that these Organisms cause human illness and no ecological information is available. We suggest they may be some new species of rickettsiae or Rickettsia-Like Organisms.
M. Lukáčová - One of the best experts on this subject based on the ideXlab platform.
-
Isolation of Coxiella burnetii and of an unknown rickettsial organism from Ixodes ricinus ticks collected in Austria
European Journal of Epidemiology, 1994Co-Authors: Rehácek J, B Kaaserer, Urvölgyi J, M. Lukáčová, Kovácová E, Elena KocianováAbstract:Two strains ofCoxiella burnetii and two strains of an unidentified rickettsial organism were isolated for the first time fromIxodes ricinus ticks collected in the Alpine region of Tirol, Austria. TheC. burnetii strains belong to the group of agents causing acute forms of Q fever. The other two strains of isolated rickettsial agent share some antigenic epitopes withC. burnetii andR. prowazekii but they differ from them by their high sensitivity to freezing and refreezing and by poor multiplication in yolk sacs of chick embryos. There is at present no evidence that these Organisms cause human illness and no ecological information is available. We suggest they may be some new species of rickettsiae or Rickettsia-Like Organisms.
-
Isolation ofCoxiella burnetii and of an unknown rickettsial organism fromIxodes ricinus ticks collected in Austria
European Journal of Epidemiology, 1994Co-Authors: J. Řeháček, B Kaaserer, M. Lukáčová, J. Úrvölgyi, E. Kováčová, Elena KocianováAbstract:Two strains of Coxiella burnetii and two strains of an unidentified rickettsial organism were isolated for the first time from Ixodes ricinus ticks collected in the Alpine region of Tirol, Austria. The C. burnetii strains belong to the group of agents causing acute forms of Q fever. The other two strains of isolated rickettsial agent share some antigenic epitopes with C. burnetii and R. prowazekii but they differ from them by their high sensitivity to freezing and refreezing and by poor multiplication in yolk sacs of chick embryos. There is at present no evidence that these Organisms cause human illness and no ecological information is available. We suggest they may be some new species of rickettsiae or Rickettsia-Like Organisms.
Victor Martínez De Artola - One of the best experts on this subject based on the ideXlab platform.
-
Mediterranean spotted fever: A preliminary tick field study
European Journal of Epidemiology, 1996Co-Authors: José A. Oteo, Agustín Estrada-peña, Carlos Ortega-pérez, Victor Martínez De ArtolaAbstract:We studied the prevalence of Rickettsia-Like Organisms infection in different tick species (3154 adults) collected in several areas of the Ebro valley (Spain). The Gimenez stain showed a prevalence of Rickettsia-Like Organisms in 38.6% of the studied ticks. Using the immunofluorescence assay, only two species, Rhipicephalus sanguineus (16.4%) and R. pusillus (19.9%) have shown Organisms compatible with spotted fever group rickettsiae.
