| antibodies to rickettsia rickettsii, rickettsia typhi, coxiella burnetii, bartonella henselae, bartonella quintana, and ehrlichia chaffeensis among healthy population in minas gerais, brazil. | rickettsial diseases except those belonging to spotted fever group rickettsioses are poorly studied in south america particularly in brazil where few epidemiological reports have been published. we describe a serosurvey for rickettsia rickettsii, r. typhi, coxiella burnetii, bartonella henselae, b. quintana, and ehrlichia chaffeensis in 437 healthy people from a brazilian rural community. the serum samples were tested by indirected micro-immunoflourescence technique and a cutoff titer of 1:64 wa ... | 2006 | 16444416 |
| questing one brazilian query: reporting 16 cases of q fever from minas gerais, brazil. | q fever has been considered non-existing in brazil where reports of clinical cases still cannot be found. this case-series of 16 patients is a result of a systematic search for such illness by means of clinical and serologic criteria. serologic testing was performed by the indirect microimmunofluorescence technique using phase i/ii c. burnetii antigens. influenza-like syndrome was the most frequent clinical form (eight cases--50%), followed by pneumonia, fuo (fever of unknown origin), mono-like ... | 2006 | 16547572 |