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      Inquérito sorológico e fatores de risco para a brucelose por Brucella canis em cães do município de Santana de Parnaíba, Estado de São Paulo Translated title: Serological survey and risk factors for brucellosis due to Brucella canis in dogs of the Santana de Parnaíba municipality, State of São Paulo

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          Abstract

          Foi investigada a prevalência da brucelose causada por Brucella canis em cães do município de Santana de Parnaíba, SP, Brasil, e realizado um estudo de possíveis fatores de risco associados à soropositividade para B. canis. Foram examinadas 410 amostras de soro sanguíneo de cães colhidas durante a campanha de vacinação anti-rábica animal, realizada em agosto de 1999. A imunodifusão em gel de ágar (IDGA), utilizando antígeno de lipopolissacarídeos e proteínas de Brucella ovis, amostra Reo 198, foi empregada em soros normais como teste de triagem, e, para a confirmação, a mesma técnica foi aplicada em soros tratados pelo 2-mercaptoetanol (IDGA-ME). A reação de fixação de complemento (CFT), utilizando antígeno de B. ovis, amostra 63/290, também foi utilizada como prova confirmatória. A determinação da prevalência considerou como positivos os animais que reagiram positivamente nos dois testes confirmatórios (IDGA-ME e CFT). A prevalência da B. canis foi de 2,2% (I.C. 95% = 1,01-4,13%). A análise estatística mostrou que os cães com acesso irrestrito à rua o dia todo (manejo do tipo solto) estiveram mais expostos ao risco da infecção por B. canis, com um valor de odds ratio de 8,73 (I.C. 95% = 1,48-51,55) e p=0,04.

          Translated abstract

          The prevalence of brucellosis due to Brucella canis was investigated in dogs of the Santana de Parnaíba county, State of São Paulo, southeastern Brazil, and the risk factors for infection were analyzed. For this purpose, 410 blood samples were collected from dogs during the rabies vaccination campaign, in August 1999. The agar gel immunodiffusion test (AGID), using lipopolysaccharides and protein antigens from Brucella ovis, strain Reo 198, was applied first as a screening test on normal sera, and secondly, for confirmation. The same AGID test was applied to sera treated previously with 2-mercaptoethanol (ME-AGID). The complement fixation test (CFT), using B. ovis antigen, strain 63/290, was applied also as a confirmatory test. For the prevalence analysis, animals presenting positive results in both ME-AGID and CFT were considered positive. The prevalence of brucellosis due to B. canis was 2.2% (95% C.I.=1.01-4.13%). Dogs that were allowed by their owners to stay free outside their home had a higher risk for contracting B. canis infection, with an odds ratio value of 8.73 (95% C.I.=1.48-51.55) and p=0.04.

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          Most cited references43

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          Manual of Standards for Diagnostic Tests and Vaccine

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            Active surveillance and risk factors for leptospirosis in Hawaii.

            A clinic-hospital-based leptospirosis surveillance program was conducted to determine the morbidity and risk factors in nonepidemic settings. The study was conducted on two islands, Kauai and Hawaii (Big Island), in the state of Hawaii for one year during 1988 and 1989. An active, more comprehensive case detection system was used on the Big Island that enabled us to determine the incidence of clinical disease. Subjects from both islands were used to conduct a case-control study for risk factors. One hundred seventy-two subjects from the Big Island (who presented with any two of the following symptoms: fever, headache, myalgia, or nausea/vomiting) were enrolled in the study. Twenty cases were diagnosed by culture, serology, or fluorescent antibody tissue staining at autopsy. Six cases required hospitalization and two succumbed to fatal infections. We estimated that these cases represented an annual incidence rate of 128 per 100,000 person-years in our target population. For 33 cases, 77 controls were matched for island, age, sex, and time of onset of illness. Interviews were conducted retrospectively in a double-blinded fashion with cases and controls and evaluated approximately 30 risk factors. Factors that were associated most strongly with development of leptospirosis were household use of rainwater catchment systems (P = 0.003), presence of skin cuts during the incubation period (P = 0.008), contact with cattle or the urine of cattle (P = 0.05 and P = 0.03, respectively), and handling of animal tissues (P = 0.005).(ABSTRACT TRUNCATED AT 250 WORDS)
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              Brucella canis infection in dogs.

              J. Moore (1969)
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                pvb
                Pesquisa Veterinária Brasileira
                Pesq. Vet. Bras.
                Colégio Brasileiro de Patologia Animal - CBPA (Rio de Janeiro )
                1678-5150
                December 2003
                : 23
                : 4
                : 156-160
                Affiliations
                [1 ] Universidade de São Paulo Brazil
                [2 ] Universidade Federal de Campina Grande Brazil
                [3 ] Instituto Biológico de São Paulo Brazil
                Article
                S0100-736X2003000400003
                10.1590/S0100-736X2003000400003
                56fc3f2c-6a35-42c7-97c8-12707e8034c4

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0100-736X&lng=en
                Categories
                VETERINARY SCIENCES

                General veterinary medicine
                diagnóstico,cães,Animal brucellosis,Brucella canis,diagnosis,dogs,Brucelose animal

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