Histophilus somni myocarditis and leptomeningitis in feedlot cattle: case report and occurrence in South America
We investigated deaths in a group of feedlot steers in Argentina. The main findings in 3 steers autopsied were pulmonary congestion and edema, necrotizing myocarditis, pericarditis, suppurative leptomeningitis, and bronchopneumonia. Histophilus somni was detected by bacterial culture and immunohisto...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2019 |
| País: | Argentina |
| Institución: | Instituto Nacional de Tecnología Agropecuaria |
| Repositorio: | INTA Digital (INTA) |
| Idioma: | inglés |
| OAI Identifier: | oai:localhost:20.500.12123/8257 |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/8257 https://journals.sagepub.com/doi/10.1177/1040638719876302 https://doi.org/10.1177/1040638719876302 |
| Access Level: | acceso abierto |
| Palabra clave: | Ganado Bovino Haemophilus somnus Miocarditis Meningitis Enfermedades de los Animales Neumonía Cattle Myocarditis Animal Diseases Pneumonia Histophilus somni Muerte Súbita Sudden Death |
| Sumario: | We investigated deaths in a group of feedlot steers in Argentina. The main findings in 3 steers autopsied were pulmonary congestion and edema, necrotizing myocarditis, pericarditis, suppurative leptomeningitis, and bronchopneumonia. Histophilus somni was detected by bacterial culture and immunohistochemistry in the hearts of the 3 animals. Partial sequences of the 16S rRNA gene of a H. somni isolate had 99% similarity with other H. somni sequences in GenBank. Most reports of H. somni septicemia in cattle originate from North America and western Europe. There is scant information about cardiac histophilosis in South America. A survey of diagnostic laboratory personnel in 7 South American countries documented various forms of bovine histophilosis in Argentina, Brazil, Uruguay, and Venezuela. |
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