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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 100, No. 8, 2005, pp. 853-859
Bioline Code: oc05174
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 100, No. 8, 2005, pp. 853-859

 en Antibodies to Rickettsia rickettsii check for this species in other resources , Rickettsia typhi check for this species in other resources , Coxiella burnetii check for this species in other resources , Bartonella henselae check for this species in other resources , Bartonella quintana check for this species in other resources , and Ehrlichia chaffeensis check for this species in other resources among healthy population in Minas Gerais, Brazil
Paulo Sérgio Gonçalves da Costa; Marcos Emilio Brigatte & Dirceu Bartolomeu Greco

Abstract

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 check for this species in other resources , R. typhi, Coxiella burnetii check for this species in other resources , Bartonella henselae check for this species in other resources , B. quintana, and Ehrlichia chaffeensis check for this species in other resources in 437 healthy people from a Brazilian rural community. The serum samples were tested by indirected micro-im-munoflourescence technique and a cutoff titer of 1:64 was used. The seroprevalence rates for R. rickettsii, R. typhi, C. burnetii, B. henselae, B. quintana, and E. chaffeensis were respectively 1.6% (7 samples); 1.1% (5 samples); 3.9% (17 samples); 13.7% (60 samples); 12.8% (56 samples), and 10.5% (46 samples). Frequent multiple/cross-reactivity was observed in this study. Age over 40 years old, urban profession, and rural residence were significantly associated with some but not all infections rate. Low seropositivity rates for R. rickettsii, R. typhi, and C. burnetii contrasted with higher rates of seropositivity for B. quintana, B. henselae, and E. chaffeensis. These results show that all tested rickettsial species or antigenically closely related possible exist in this particular region.

Keywords
Bartonella - Rickettsia - Coxiella - Ehrlichia - seroprevalence - Brazil

 
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