Navegando por Autor "Calic, Simone Berger"
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Item Clinical and laboratorial evidence of Rickettsia felis infections in Latin America.(2004) Galvão, Márcio Antônio Moreira; Mafra, Cláudio Lísias; Chamone, Chequer Buffe; Calic, Simone Berger; Zavala Velazquez, Jorge Ernesto; Walker, David HughesAfter the discovery and initial characterization of Rickettsia felis in 1992 by Azad and cols, and the subsequent first description of a human case of infection in 1994, there have been two communications of human rickettsiosis cases caused by Rickettsia felis in Latin America. The first one was published in 2000 by Zavala-Velazquez and cols in Mexico. In 2001 Raoult and cols described the occurrence of two human cases of Rickettsia felis rickettsiosis in Brazil. In the present discussion these two articles were compared and after the description of the principal signs and symptoms, it was concluded that more studies are needed with descriptions of a greater number of patients to establish the true frequency of the clinical signs and symptoms present in Rickettsia felis rickettsiosis.Item Fatal spotted fever rickettsiosis, Minas Gerais, Brazil.(2003) Galvão, Márcio Antônio Moreira; Dumler, J. Stephen; Mafra, Cláudio Lísias; Calic, Simone Berger; Chamone, Chequer Buffe; Cesarino Filho, Gracco; Olano, Juan Pablo; Walker, David HughesThe 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 investigation of tissues obtained at necropsy of a child in each location, Novo Cruzeiro and Coronel Fabriciano municipalities, established the diagnosis by demonstration of disseminated endothelial infection with spotted fever group rickettsiae. The diagnosis in the two fatal cases from Coronel Fabriciano and the surviving patient from Novo Cruzeiro was further supported by immunofluorescence serologic tests.Item Human ehrlichioses in Brazil : first suspect cases.(2004) Calic, Simone Berger; Galvão, Márcio Antônio Moreira; Bacellar, Fátima; Rocha, Christiane Maria Barcellos Magalhães da; Mafra, Cláudio Lísias; Leite, Romário Cerqueira; Walker, David HughesBrazilian 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 symptoms similar to rickettsioses of the spotted fever group, and they are transmitted by ixodid ticks. The first two suspected cases of human ehrlichiosis in Brazil were first considered to be cases of BSF. The differential diagnosis was made at the Minas Gerais Rickettsiosis Public Health Laboratory. The clinical and laboratory findings, with positive serology for the HME agent, indicated suspected cases of human ehrlichioses in Brazil.Item Old and new human rickettsiosis in Minas Gerais state, Brazil.(2005) Calic, Simone Berger; Rocha, Christiane Maria Barcellos Magalhães da; Leite, Romário Cerqueira; Mafra, Cláudio Lísias; Galvão, Márcio Antônio MoreiraThe authors describe cases of Brazilian spotted fever (BSF) diagnosed in Minas Gerais state, Brazil, by the Minas Gerais Public Health Laboratory, Ezequiel Dias Foundation from 1995 to 2004. In addition they present three cases of human Rickettsia felis rickettsiosis from Minas Gerais diagnosed in France in 1999, and the first two suspected cases of human monocytic ehrlichiosis (HME) diagnosed in Ezequiel Dias Foundation in 2001. In both cases a differential diagnose was made with BSF.Item Revisiting Brazilian spotted fever focus of Caratinga, Minas Gerais state, Brazil.(2006) Galvão, Márcio Antônio Moreira; Cardoso, Luciane Daniele; Mafra, Cláudio Lísias; Calic, Simone Berger; Walker, David HughesWe revisited a Brazilian spotted fever focal area in Minas Gerais state, Brazil, in 2002, and performed a serologic survey in dogs and cats. The results of this survey are compared with the survey made 10 years before. The possible efficacy of vector control measures adopted in this area and the role of dogs and horses as sentinels of infection by Rickettsia are discussed.Item Rickettsia felis in the Americas.(2006) Galvão, Márcio Antônio Moreira; Zavala Velazquez, Jorge Ernesto; Calic, Simone Berger; Walker, David HughesThe authors describe their work in the Americas in Rickettsia felis cases in humans and the presence of Rickettsia felis in vectors.Item Rickettsial diseases in Brazil and Portugal : occurrence, distribution and diagnosis.(2005) Galvão, Márcio Antônio Moreira; Silva, Luiz Jacintho da; Nascimento, Elvira Maria Mendes; Calic, Simone Berger; Sousa, Rita de; Bacellar, FátimaThe present study is an update review on the occurrence and diagnosis of rickettsial diseases in Brazil and Portugal, aiming at promoting their epidemiological surveillance in both countries. A literature review was carried out and unpublished data of laboratories and surveillance systems were presented. The results described the occurrence of rickettsial diseases and infections in Brazil and Portugal, including other new and still poorly understood rickettsial infections. Current diagnostic methods were discussed. As in many other countries, rickettsial diseases and infections seem to be an emerging public health problem. Treated as a minor problem for many decades, the interest in these infections has increased in both countries but further studies are needed to establish their role as a public health problem.Item Rickettsioses emergentes e reemergentes numa região endêmica do Estado de Minas Gerais, Brasil.(2002) Galvão, Márcio Antônio Moreira; Lamounier, Joel Alves; Bonomo, Élido; Tropia, Margarete S.; Rezende, Eliane Garcia; Calic, Simone Berger; Chamone, Chequer Buffe; Machado, Mirtes C.; Otoni, Márcia E. A.; Leite, Romário Cerqueira; Caram, Camila; Mafra, Cláudio Lísias; Walker, David HughesO trabalho descreve um inquérito sorológico para rickettsioses em escolares e cães de Novo Cruzeiro, Minas Gerais, Brasil, em 1998. Trezentos e trinta e um escolares pertenciam a uma área endêmica e 142 a uma área não endêmica do município. Trinta e nove (10,1%) soros foram reativos à Reação de Imunofluorescência Indireta (RIFI) para Rickettsia rickettsii no título de 1:64, sendo que dentre esses reativos, 35 eram de estudantes de escolas de área endêmica. Dentre os 73 cães analisados quanto à presença de anticorpos anti R. rickettsii, anti Ehrlichia chaffeensis e anti Ehrlichia canis à RIFI no título de 1:64, 3 (4,11%), 11 (15,07%) e 13 (17,81%) desses animais foram reativos respectivamente aos antígenos testados. Conclui-se que, a sororeatividade para R. rickettsii em indivíduos sadios sem história prévia de febre maculosa brasileira, uma doença marcante por sua alta letalidade, e a presença de sororeatividade para Ehrlichia com potencial patogênico para o homem em cães, nos leva a indagar sobre a transmissão ao homem de outras espécies da família Rickettsiae na área estudada.Item Spotted fever rickettsiosis in Coronel Fabriciano, Minas Gerais State.(2003) Galvão, Márcio Antônio Moreira; Calic, Simone Berger; Chamone, Chequer Buffe; Siqueira, Cláudio Lísias Mafra de; Cesarino Filho, Gracco; Olano, Juan Pablo; Walker, David HughesWe 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 diagnosis of patients with symptoms of rickettsial diseases.