Brazilian spotted fever: A spatial analysis of human cases and vectors in the state of São Paulo, Brazil

2020 ◽  
Vol 67 (6) ◽  
pp. 629-636
Author(s):  
Claudia Mello Ribeiro ◽  
Veruska Maia Costa ◽  
Jonas Lotufo Brant Carvalho ◽  
Rodrigo Guerrero Mendes ◽  
Paula Andrea de Santis Bastos ◽  
...  
Keyword(s):  
Spatial Analysis ◽  
Spotted Fever ◽  
Sao Paulo ◽  
The State ◽  
São Paulo ◽  
Brazilian Spotted Fever

scholarly journals Serosurvey of Rickettsia spp. in dogs and humans from an endemic area for Brazilian spotted fever in the State of São Paulo, Brazil

2008 ◽  
Vol 24 (2) ◽  
pp. 247-252 ◽  
Author(s):  
Adriano Pinter ◽  
Maurício C. Horta ◽  
Richard C. Pacheco ◽  
Jonas Moraes-Filho ◽  
Marcelo B. Labruna
Keyword(s):  
Human Serum ◽  
Endemic Area ◽  
Spotted Fever ◽  
Sao Paulo ◽  
The State ◽  
The Other ◽  
São Paulo ◽  
Human Sera ◽  
Antibody Titers ◽  
Brazilian Spotted Fever

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 <FONT FACE=Symbol>³</FONT> 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.

scholarly journals Detection of Brazilian spotted fever infection by polymerase chain reaction in a patient from the state of São Paulo

2005 ◽  
Vol 100 (3) ◽  
pp. 277-279 ◽  
Author(s):  
Elvira Maria Mendes Nascimento ◽  
Flávia de Sousa Gehrke ◽  
Rosa Amélia Maldonado ◽  
Silvia Colombo ◽  
Luiz Jacintho da Silva ◽  
...  
Keyword(s):  
Polymerase Chain Reaction ◽  
Spotted Fever ◽  
Sao Paulo ◽  
The State ◽  
São Paulo ◽  
Chain Reaction ◽  
Brazilian Spotted Fever ◽  
Polymerase Chain

New Epidemiological Data on Brazilian Spotted Fever in an Endemic Area of the State of São Paulo, Brazil

2009 ◽  
Vol 9 (1) ◽  
pp. 73-78 ◽  
Author(s):  
Jonas Moraes-Filho ◽  
Adriano Pinter ◽  
Richard C. Pacheco ◽  
Thais B. Gutmann ◽  
Sonia O. Barbosa ◽  
...  
Keyword(s):  
Endemic Area ◽  
Spotted Fever ◽  
Epidemiological Data ◽  
Sao Paulo ◽  
The State ◽  
São Paulo ◽  
Brazilian Spotted Fever

scholarly journals Rickettsia Species Infecting Amblyomma cooperi Ticks from an Area in the State of Sao Paulo, Brazil, Where Brazilian Spotted Fever Is Endemic

2004 ◽  
Vol 42 (1) ◽  
pp. 90-98 ◽  
Author(s):  
M. B. Labruna ◽  
T. Whitworth ◽  
M. C. Horta ◽  
D. H. Bouyer ◽  
J. W. McBride ◽  
...  
Keyword(s):  
Spotted Fever ◽  
Sao Paulo ◽  
The State ◽  
São Paulo ◽  
Rickettsia Species ◽  
Brazilian Spotted Fever

scholarly journals Epidemiological aspects of the Brazilian spotted fever: serological survey of dogs and horses in an endemic area in the State of São Paulo, Brazil

1996 ◽  
Vol 38 (6) ◽  
pp. 427-430 ◽  
Author(s):  
Elba R.S. de Lemos ◽  
Raimundo D. Machado ◽  
José R. Coura ◽  
Maria A.A.M. Guimarães ◽  
Nelson Chagas
Keyword(s):  
Endemic Area ◽  
Spotted Fever ◽  
Domestic Animals ◽  
Sao Paulo ◽  
Spotted Fever Group ◽  
São Paulo ◽  
Serological Survey ◽  
Serum Samples ◽  
Blood Samples ◽  
Brazilian Spotted Fever

In order to obtain information on Brazilian spotted fever, a study in domestic animals was performed in the County of Pedreira, State of São Paulo, Brazil, where 17 human cases had been notified. Serum samples obtained from animals were tested by indirect immunofluorescence for detectable antibodies to spotted fever-group rickettsiae. Seropositivity was revealed in 12 (36.4%) of 33 dogs and seven (77.8%) of nine horses from the endemic area. For comparison, blood samples from dogs and horses from non endemic area were tested and four (12.9%) of 31 dogs and three (27.3%) of 11 horses were positive. The highest titers of antibodies by IFA (IgG > 1:1024) were found only in three dogs and six horses from endemic area. The results suggest that dogs as horses may serve as environmental sentinels for estabilishing the prevalence of foci of spotted fever in Brazil.

scholarly journals A new focus of Brazilian spotted fever in the central-west region of São Paulo state, Brazil

2021 ◽  
Vol 54 ◽  
Author(s):  
Felipe Fornazari ◽  
Cristianne Dantas Freirias ◽  
Heloísa Coppini de Lima ◽  
Mauricio Mariani Rodrigues ◽  
Helio Langoni ◽  
...  
Keyword(s):  
Spotted Fever ◽  
Sao Paulo ◽  
São Paulo ◽  
Paulo State ◽  
West Region ◽  
São Paulo State ◽  
Brazilian Spotted Fever

scholarly journals Molecular Characterization of Mediterranean Spotted Fever Rickettsia Isolated From a European Traveler in the State of São Paulo, Brazil

2013 ◽  
Vol 20 (1) ◽  
pp. 54-56 ◽  
Author(s):  
Flávia S. Gehrke ◽  
Rodrigo N. Angerami ◽  
Mauro T. Marrelli ◽  
Eliana R. de Souza ◽  
Elvira M.M. do Nascimento ◽  
...  
Keyword(s):  
Molecular Characterization ◽  
Spotted Fever ◽  
Sao Paulo ◽  
The State ◽  
Mediterranean Spotted Fever ◽  
São Paulo ◽  
Spotted Fever Rickettsia

scholarly journals Serological survey of Rickettsia in equids from Vale do Paraíba, São Paulo, Brazil, and their tick identification and molecular investigation of Rickettsia

2019 ◽  
Vol 56 (4) ◽  
pp. e158159
Author(s):  
Claudia Iorio Budweg ◽  
Amanda Oliveira de Sousa ◽  
Tânia Regina Vieira de Carvalho ◽  
Zahi Êni Santos Souza ◽  
Maria Carolina de Azevedo Serpa ◽  
...  
Keyword(s):  
Real Time ◽  
Real Time Pcr ◽  
Spotted Fever ◽  
Sao Paulo ◽  
Serological Response ◽  
São Paulo ◽  
Serological Survey ◽  
Blood Samples ◽  
Rickettsia Rickettsii ◽  
Brazilian Spotted Fever

Brazilian spotted fever is a serious and lethal illness for humans and is caused by the Rickettsia rickettsii bacteria. In the state of São Paulo/SP (Brazil), the etiological agent of this disease is transmitted by the Amblyomma sculptum tick. It was already shown that horses infected with this bacteria produce a strong immune response and could be important sentinels for the detection of the disease in a proper region. The present investigation performed a serological survey in horses from five farms of Vale do Paraíba, São Paulo state, Brazil, searching for antibodies against, Rickettsia rickettsii, Rickettsia parkeri, Rickettsia amblyommatis, Rickettsia rhipicephali, and Rickettsia bellii. In each farm, ticks were also collected that were taxonomically identified and examined by real-time PCR for Rickettsia spp DNA. Blood samples were collected from 206 horses, and 334 ticks were picked up from these animals from January to December 2017. Eighty ticks wereA. sculptum and 254 Dermacentor nitens. Of the blood samples, 7.3% seroconverted to Rickettsia spp. Of these, 0.97% had a positive serological response to R. bellii. None of the 80 A. sculptum ticks were positive through real-time PCR for Rickettsia spp. Although there was no detection of ticks infected by Rickettsia spp in five farms of Paraíba Valley, the horses presented serological positive reactions against this agent. Thus, further large studies should be conducted in the area targeting hosts and vectors to generate data for control measures of the transmission of Brazilian spotted fever. 

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