[Emerging and reemerging rickettsiosis in an endemic area of Minas Gerais State, Brazil].
This article describes a serological survey for rickettsiosis in the county of Novo Cruzeiro, Minas Gerais State, Brazil, in 1998, testing schoolchildren and dogs. Sera included 331 samples from schoolchildren from an endemic area and 142 samples from schoolchildren from a non-endemic area in the county. All children examined were healthy and had not reported clinical symptoms of Brazilian spotted fever prior to the serological survey. Some 35 children in the endemic area were reactive to Rickettsia rickettsiiby indirect fluorescent antibody (IFA) with a titer of 1:64, corresponding to 10.6%. Sera from 73 dogs were tested, showing seroreactivity (IFA 1:64) to Rickettsia rickettsi, Ehrlichia chaffeensis, and Ehrlichia canisin 3 (4.11%), 11 (15.07%), and 13 (17.81%), respectively. The results in schoolchildren and the presence of canine seroreactivity to Ehrlichiaspecies that are potentially pathogenic to humans suggests the risk of transmission of other Rickettsiaein the study area.
Galvão
Márcio A M
MA
Departamento de Nutrição Clínica e Social, Escola de Nutrição, Universidade Federal de Ouro Preto, Ouro Preto, MG, 35400-000, Brasil. mgalvao@enut.ufop.br
Lamounier
Joel A
JA
Bonomo
Elido
E
Tropia
Margarete S
MS
Rezende
Eliane G
EG
Calic
Simone B
SB
Chamone
Chequer B
CB
Machado
Mirtes C
MC
Otoni
Márcia E A
ME
Leite
Romário C
RC
Caram
Camila
C
Mafra
Cláudio L
CL
Walker
David H
DH
D000818:Animals; D000907:Antibodies, Bacterial / Q000032:analysis*; D001938:Brazil / Q000453:epidemiology; D002648:Child; D021821:Communicable Diseases, Emerging / Q000097:blood / Q000453:epidemiology* / Q000662:veterinary; D004283:Dog Diseases / Q000097:blood / Q000453:epidemiology; D004285:Dogs; D019353:Endemic Diseases / Q000706:statistics & numerical data*; D019084:Fluorescent Antibody Technique, Indirect; D006801:Humans; D015995:Prevalence; D012284:Rickettsia rickettsii; D012373:Rocky Mountain Spotted Fever / Q000097:blood / Q000453:epidemiology* / Q000662:veterinary; D016036:Seroepidemiologic Studies; D005423:Siphonaptera; D013987:Ticks
D000907:Antibodies, Bacterial