| rickettsia in synanthropic and domestic animals and their hosts from two areas of low endemicity for brazilian spotted fever in the eastern region of minas gerais, brazil. | the aim of this study was to understand the current epidemiology of rickettsial diseases in two rickettsial-endemic regions in brazil. in the municipalities of pingo d'agua and santa cruz do escalvado, among serum samples obtained from horses and dogs, reactivity by immunofluorescent assay against spotted fever group rickettsiae was verified. in some serum samples from opossums (didelphis aurita) captured in santa cruz do escalvado, serologic response against rickettsiae was also verified. polym ... | 2010 | 21118939 |
| fatal spotted fever rickettsiosis, minas gerais, brazil. | the emergence and reemergence of a serious infectious disease are often associated with a high case-fatality rate because of misdiagnosis and inappropriate or delayed treatment. the current reemergence of spotted fever rickettsiosis caused by rickettsia rickettsii in brazil has resulted in a high proportion of fatal cases. we describe two familial clusters of brazilian spotted fever in the state of minas gerais, involving six children 9 months to 15 years of age; five died. immunohistochemical i ... | 2003 | 14718082 |
| spotted fever rickettsiosis in coronel fabriciano, minas gerais state. | we report cases of spotted fever rickettsiosis in coronel fabriciano municipality of minas gerais state, brazil. the cases occurred in may and june of 2000. during this period there were two deaths among children from an area named pedreira in a periurban area of this municipality. in a boy who died with clinical manifestations of brazilian spotted fever, a necropsy revealed the presence of a spotted fever group rickettsia. the serological results confirm the difficulty in the differential diagn ... | 2003 | 12937725 |
| rocky mountain spotted fever in an endemic area in minas gerais, brazil. | only one species of spotted fever-group rickettsiae that is pathogenic for humans has been isolated in brazil, where few physicians are familiar with this disease. in order to obtain information on tick-borne rickettsiosis, a study was performed in the county of santa cruz do escalvado, state of minas gerais, brazil, where a fatal clinical case confirmed by specific immunofluorescence had been reported. serum samples obtained from 679 humans and 96 dogs were tested by indirect immunofluorescence ... | 1994 | 8524052 |
| 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 |
| human ehrlichioses in brazil: first suspect cases. | brazilian spotted fever (bsf) rickettsiosis is the most common and recognized of the human rickettsioses in brazil. it is difficult to establish the diagnosis of human rickettsiosis infection by routine microbiologic methods, creating a false idea that rickettsia and ehrlichia infections are rare and without importance. new tick-borne diseases, like human granulocytic anaplasmosis (hga) and human monocytic ehrlichiosis (hme), have been described in many countries. these diseases can present symp ... | 2004 | 15476059 |