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      Historical highlights regarding glanders, from 2007 to 2017, in the state of Maranhão, Brazil Translated title: Destaques históricos do mormo, de 2007 a 2017, no Estado do Maranhão, Brasil

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          Abstract

          ABSTRACT: Glanders is an infectious disease of equids caused by Burkholderia mallei, a facultative intracellular non-mobile Gram-negative bacterium that can be transmitted to other animals and humans. This study described glanders cases reported in the state of Maranhão, located within an Amazon-Cerrado transition region in northeastern Brazil, from 2007 to 2017. A database in an electronic spreadsheet (Microsoft Excel 2010) was developed containing information on the number of positive animals according to age, sex, purpose, year and month, municipality and mesoregion of origin of the animal. The descriptive analyzis was performed on data provided by the State Agency for Agricultural and Livestock Protection of the state of Maranhão (AGED), and by the official private laboratory. As the database did not have information data about negative animals, possible risk factors could not be evaluated. Among the total of 62,555 equids were evaluated by means of the complement fixation test (CFT), 59,036 were horses, 2,981 mules and 538 donkeys. Thirty-five samples (0.06%) reacted in the CFT. Five additional samples were by the western blot technique and three of them were positive. All the reactive horses (Equuscaballus) were from rural areas. Results presented here indicate that glanders may be endemic in the state of Maranhão and is a public health concern.

          Translated abstract

          RESUMO: O mormo é uma doença infecciosa de equídeos causada por Burkholderia mallei, uma bactéria Gram-negativa intracelular, não móvel e facultativa que pode ser transmitida a outros animais e humanos. O objetivo deste estudo foi descrever os casos de mormo relatados no estado do Maranhão, em uma região de transição Amazônia-Cerrado do Nordeste do Brasil, no período de 2007 a 2017. Um banco de dados em uma planilha eletrônica (Microsoft Excel 2010) foi desenvolvido contendo informações sobre o número de animais positivos de acordo com a idade, sexo, finalidade, ano, mês, municípios e mesorregiões de origem do animal. A análise descritiva foi realizada sobre os dados fornecidos pela Agência Estadual de Defesa Agropecuária do Estado do Maranhão (AGED), e pelo laboratório privado oficial. Como o banco de dados não possui informações sobre animais negativos, possíveis fatores de risco não puderam ser avaliados. Entre o total de 62.555 equídeos foram avaliados com o teste de fixação do complemento (CFT), 59.036 eram cavalos, 2.981 mulas e 538 jumentos. Trinta e cinco (0,06%) amostras reagiram ao CFT. Cinco amostras adicionais foram testadas pela técnica de western blot e três foram positivas. Todos os animais positivos foram cavalos (Equus caballus) da área rural. Os resultados indicam que o mormo pode ser endêmico no estado do Maranhão e uma preocupação de saúde pública.

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          Glanders: off to the races with Burkholderia mallei.

          Burkholderia mallei, the etiologic agent of the disease known as glanders, is primarily a disease affecting horses and is transmitted to humans by direct contact with infected animals. The use of B. mallei as a biological weapon has been reported and currently, there is no vaccine available for either humans or animals. Despite the history and highly infective nature of B. mallei, as well as its potential use as a bio-weapon, B. mallei research to understand the pathogenesis and the host responses to infection remains limited. Therefore, this minireview will focus on current efforts to elucidate B. mallei virulence, the associated host immune responses elicited during infection and discuss the feasibility of vaccine development.
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            Glanders: an overview of infection in humans

            Glanders is a highly contagious and often fatal zoonotic disease, primarily of solipds. In the developed world, glanders has been eradicated. However, prior use of B. mallei as a biological weapon and its high mortality in inhalation animal studies has affirmed B. mallei as a biodefense concern. This threat requires the development of new glanders medical countermeasures (MCMs), as there is a lack of an effective vaccine and lengthy courses of multiple antibiotics needed to eradicate B. mallei. Here, we present a literature review of human glanders in which we discuss the clinical epidemiology and risk factors, potential routes of exposure, symptoms, the incubation period, and specific diagnostics. This review focuses on pulmonary glanders, as this is the most likely outcome of a biological weapons attack. Additionally, we outline current treatment regimens and propose a clinical definition of human pulmonary glanders infection.
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              Anemia infecciosa eqüina: prevalência em eqüídeos de serviço em Minas Gerais

              Estimaram-se, no estado de Minas Gerais, a prevalência e a distribuição espacial da anemia infecciosa eqüina (AIE) em propriedades com eqüídeos de serviço. As amostras de sangue, de 6540 eqüídeos de 1940 rebanhos foram coletadas no período de setembro de 2003 a março de 2004, nos 853 municípios do estado. Utilizaram-se dois testes de laboratório em seqüência: ELISA, usando-se antígeno recombinante gp90, e imunodifusão em gel de ágar (IDGA). As prevalências foram de 5,3% [IC=4,3 a 6,3%] para rebanhos e de 3,1% [IC=2,2 a 3,9%] para animais. O estado de Minas Gerais foi considerado área endêmica para AIE. As mais altas prevalências para rebanhos e para animais foram encontradas na região Norte/Noroeste, seguida pela região Vale do Mucuri/Jequitinhonha.
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                Author and article information

                Journal
                cr
                Ciência Rural
                Cienc. Rural
                Universidade Federal de Santa Maria (Santa Maria, RS, Brazil )
                0103-8478
                1678-4596
                2023
                : 53
                : 10
                : e20210901
                Affiliations
                [1] São Luís Maranhão orgnameUniversidade Estadual do Maranhão Brazil
                [3] São Luís MA orgnameAgência Estadual de Defesa Agropecuária (AGED) Brasil
                [5] Recife Pernambuco orgnameUniversidade Federal Rural de Pernambuco orgdiv1Departamento de Medicina Veterinária Brazil
                [4] São Luís orgnameSuperintendência Federal de Agricultura, Pecuária e Abastecimento no Estado do Maranhão Brazil
                [2] São Paulo São Paulo orgnameUniversidade de São Paulo orgdiv1Departamento de Medicina Veterinária Preventiva e Saúde Animal orgdiv2Faculdade de Medicina Veterinária e Zootecnia Brazil
                Article
                S0103-84782023001000452 S0103-8478(23)05301000452
                10.1590/0103-8478cr20210901
                01bf3f3b-2d54-463a-925d-8a4bcf9d4313

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 22 December 2021
                : 21 October 2022
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 23, Pages: 0
                Product

                SciELO Brazil

                Categories
                Microbiology

                Microbiology & Virology
                cavalos,Burkholderia mallei,Nordeste,horses,Burkholderia mallei,northeastern

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