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Serosurvey of Rickettsia spp. in dogs and humans from an endemic area for Brazilian spotted fever in the State of São Paulo, Brazil.
Serosurvey of Rickettsia spp. in dogs and humans from an endemic area for Brazilian spotted fever in the State of São Paulo, Brazil.
- Source :
-
Cadernos de saude publica [Cad Saude Publica] 2008 Feb; Vol. 24 (2), pp. 247-52. - Publication Year :
- 2008
-
Abstract
- The present study provides a rickettsial serosurvey in 25 dogs and 35 humans in an endemic area for Brazilian spotted fever in the State of São Paulo, where the tick Amblyomma aureolatum is the main vector. Testing canine and human sera by indirect immunofluorescence against four Rickettsia antigens (R. rickettsii, R. parkeri, R. felis and R. bellii) showed that 16 (64%) of canine sera and 1 (2.8%) of human sera reacted to at least one of these rickettsial antigens with titers >0r= 64. Seven canine sera and the single reactive human serum showed titers to R. rickettsii at least four times those of any of the other three antigens. The antibody titers in these 7 animals and 1 human were attributed to stimulation by R. rickettsii infection. No positive canine or human serum was attributed to stimulation by R. parkeri, R. felis, or R. bellii. Our serological results showed that dogs are important sentinels for the presence of R. rickettsii in areas where the tick A. aureolatum is the main vector of Brazilian spotted fever.
- Subjects :
- Animals
Antigens, Bacterial immunology
Brazil epidemiology
Dogs
Fluorescent Antibody Technique, Indirect
Humans
Insect Vectors
Rickettsia Infections diagnosis
Rickettsia Infections transmission
Rickettsia Infections veterinary
Rocky Mountain Spotted Fever epidemiology
Rural Population
Seroepidemiologic Studies
Antibodies, Bacterial blood
Endemic Diseases statistics & numerical data
Endemic Diseases veterinary
Rickettsia immunology
Rickettsia Infections epidemiology
Subjects
Details
- Language :
- English
- ISSN :
- 0102-311X
- Volume :
- 24
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- Cadernos de saude publica
- Publication Type :
- Academic Journal
- Accession number :
- 18278271
- Full Text :
- https://doi.org/10.1590/s0102-311x2008000200003