Realizou-se um estudo sobre a ocorrência da raiva bovina em 17 municípios que fazem parte da Unidade Regional de Supervisão de Rondonópolis do Instituto de Defesa Agropecuária do Estado de Mato Grosso - INDEA/MT. O objetivo do trabalho foi analisar a situação epidemiológica da doença com a finalidade de repensar as ações de atenção e vigilância epidemiológica. Foram analisados 70 Formulários de Investigação de Doenças (Inicial) (Form-in) da Coordenadoria de Controle das Doenças dos Animais do INDEA/MT, período correspondente de janeiro de 2003 a dezembro de 2007. Informações complementares foram obtidas junto ao Conselho Regional de Medicina Veterinária do Estado de Mato Grosso e banco de dados do IBGE. Verificou-se que a doença apresentou de forma endêmica entre os municípios, com pequena variação anual no número de casos. O maior porcentual dos casos ocorreu no mês de janeiro e julho, em animais com idade entre quatro a 12 meses e em propriedades com efetivo bovino superior a 500 cabeças no rebanho. Além disso, não existiu correlação entre densidade de bovinos com casos de raiva. A partir dos resultados, conclui-se a importância da manutenção das atividades de educação sanitária, o credenciamento ou incremento do diagnóstico laboratorial de raiva no estado, melhora das atividades de cadastramento e monitoramento dos abrigos e refúgios de morcegos hematófagos e o combate aos morcegos hematófagos, além da vacinação do gado bovino nas regiões endêmicas da raiva. / Study on the occurrence of bovine rabies was carried out in seventeen municipalities that are part of the Unidade Regional de Supervisão (Regional Unit of Supervision) of the Rondonópolis belonging to the Instituto de Defesa Agropecuária of the state of Mato Grosso. The objective of the study was to assess the epidemiological situation of the disease in order to rethink the actions of care and epidemiological surveillance. Seventy forms named as Formulários de Investigação de Doenças (Inicial) (Form-in), pertaining to the Coordenadoria de Controle das Doenças dos Animais of the INDEA/MT were analyzed, corresponding to the period of January 2003 to December 2007. Additional information was obtained from the Conselho Regional de Medicina Veterinária of the state of Mato Grosso and database of the IBGE. It was found that the disease had been endemic among the municipalities, with small annual variation in the number of cases. The higher percentages of cases occurred in January and July, in four to twelve year-old animals, in properties with the number of cattle greater than five hundred animals in the herd. Furthemore, there was no correlation between the cattle density and the occurrence of rabies. From these results, we conclude that it is important to keep maintaining the activities of health education, the accreditation or incrementation of laboratorial diagnosis of rabies in the state, amelioration of the activities of registration, monitoring of shelters and refuges of the vampire bats and bats control, besides the cattle vaccination in rabies endemic regions.

Realizou-se um estudo sobre a ocorrência da raiva bovina em 17 municípios que fazem parte da Unidade Regional de Supervisão de Rondonópolis do Instituto de Defesa Agropecuária do Estado de Mato Grosso - INDEA/MT. O objetivo do trabalho foi analisar a situação epidemiológica da doença com a finalidade de repensar as ações de atenção e vigilância epidemiológica. Foram analisados 70 Formulários de Investigação de Doenças (Inicial) (Form-in) da Coordenadoria de Controle das Doenças dos Animais do INDEA/MT, período correspondente de janeiro de 2003 a dezembro de 2007. Informações complementares foram obtidas junto ao Conselho Regional de Medicina Veterinária do Estado de Mato Grosso e banco de dados do IBGE. Verificou-se que a doença apresentou de forma endêmica entre os municípios, com pequena variação anual no número de casos. O maior porcentual dos casos ocorreu no mês de janeiro e julho, em animais com idade entre quatro a 12 meses e em propriedades com efetivo bovino superior a 500 cabeças no rebanho. Além disso, não existiu correlação entre densidade de bovinos com casos de raiva. A partir dos resultados, conclui-se a importância da manutenção das atividades de educação sanitária, o credenciamento ou incremento do diagnóstico laboratorial de raiva no estado, melhora das atividades de cadastramento e monitoramento dos abrigos e refúgios de morcegos hematófagos e o combate aos morcegos hematófagos, além da vacinação do gado bovino nas regiões endêmicas da raiva. / Study on the occurrence of bovine rabies was carried out in seventeen municipalities that are part of the Unidade Regional de Supervisão (Regional Unit of Supervision) of the Rondonópolis belonging to the Instituto de Defesa Agropecuária of the state of Mato Grosso. The objective of the study was to assess the epidemiological situation of the disease in order to rethink the actions of care and epidemiological surveillance. Seventy forms named as Formulários de Investigação de Doenças (Inicial) (Form-in), pertaining to the Coordenadoria de Controle das Doenças dos Animais of the INDEA/MT were analyzed, corresponding to the period of January 2003 to December 2007. Additional information was obtained from the Conselho Regional de Medicina Veterinária of the state of Mato Grosso and database of the IBGE. It was found that the disease had been endemic among the municipalities, with small annual variation in the number of cases. The higher percentages of cases occurred in January and July, in four to twelve year-old animals, in properties with the number of cattle greater than five hundred animals in the herd. Furthemore, there was no correlation between the cattle density and the occurrence of rabies. From these results, we conclude that it is important to keep maintaining the activities of health education, the accreditation or incrementation of laboratorial diagnosis of rabies in the state, amelioration of the activities of registration, monitoring of shelters and refuges of the vampire bats and bats control, besides the cattle vaccination in rabies endemic regions.

Thesis (PhD)-- Stellenbosch University, 2013. / ENGLISH ABSTRACT: The emergence and re-emergence of viral human pathogens from wildlife sources in the recent past has led to increased studies and surveillance of wildlife for potentially zoonotic agents in order to gain a better understanding of the pathogens, their sources as well as events that may lead to viral emergence. Of the >1407 known human pathogens, 13% are classified as emerging or re-emerging, and 58% as zoonotic; 37% of the (re-)emerging and 19% of the zoonotic pathogens are RNA viruses, accounting for the majority of recently emerged infectious diseases with a zoonotic origin, such as HIV, Ebola, Hendra, Nipah, Influenza and SARS. This study focusses on potentially zoonotic viruses hosted by rodents (Muridae family), shrews (order previously known as Insectivora/Soricomorpha, now reclassified as Eulipotyphla) and bats (order Chiroptera). Rodents and bats represent the largest (~40%) and second largest (~25%) mammalian orders and both occur on every continent except Antarctica. Together, the three mammalian orders investigated represent the most relevant potential sources of new zoonoses. In this study I investigated the occurrence of astroviruses, arenaviruses, coronaviruses and hantaviruses in South African small mammal species belonging to the orders mentioned above. These viruses have either been implicated in recent emerging zoonotic events or are considered to have the potential to cause cross-species transmissions resulting in a zoonotic event. In the first part of the study specimens collected from various bat, rodent and shrew species were screened for viral sequences by broadly reactive PCRs; positive samples were characterised by sequencing and sequence analysis. A separate part of the study focussed on hantavirus disease in humans: a seroprevalance survey was conducted to determine the presence of hantavirus antibodies in the local population. Additionally, acutely ill patients with potential hantavirus disease were tested in an attempt to identify possible acute infections and define clinical hantavirus disease in South Africa. Screening of rodent and shrew specimens resulted in the identification of eight novel arenavirus sequences. Seven of the sequences are related to Merino Walk virus, a recently identified South African arenavirus, and the eighth sequence represents a novel lineage of Old World arenaviruses. Screening of bat specimens resulted in the identification of highly diverse novel astrovirus and coronavirus sequences in various South African bat species, including the identification of a viral sequence closely related to the recently emerged Middle East Respiratory Syndrome coronavirus. While the study did not identify hantavirus infections in any of the acutely ill patients, it found seroprevalences similar to those observed in Europe and West Africa. The results obtained highlight the importance of small mammals in the emergence of potential zoonoses and further reinforce the importance of viral surveillance of relevant wildlife species. Further in-depth studies of naturally infected reservoir host populations are required in order to gain a better understanding of virus-host dynamics and the events that lead to virus emergence. / German Research Foundation (DFG) (project number: KR1293/9-1/13-1) / The Polio Research Foundation and the NHLS Research / Harry Crossley Foundation, the Polio Research Foundation and Stellenbosch University for granting scholarships and bursaries for PhD.