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Atypical nervous lesion in Haemophilus somnus infection of cattle
The Cornell Veterinarian
|October 1, 1984
Abstract:
Two cows affected with Haemophilus somnus were examined pathologically. Although manifested lesions were composed of fibrinopurulent meningitis without the usual parenchymatous lesions in the central nervous system, Haemophilus somnus was isolated in pure culture from the cerebral cortex of both cases. Presence of this atypical lesion in the nervous system should be kept in mind for the differential diagnosis of the disease.
Insights
Two cows with Haemophilus somnus infection showed unusual brain lesions. The bacteria was found in the cerebral cortex, highlighting atypical presentations for disease diagnosis.
Area of Science:
- Veterinary Pathology
- Bovine Neurology
- Microbiology
Background:
- Haemophilus somnus is a significant pathogen in cattle.
- Neurological disease in cattle can present with varied clinical signs and lesions.
Purpose of the Study:
- To describe the pathological findings in two cases of bovine infection with Haemophilus somnus.
- To highlight an atypical presentation of Haemophilus somnus-induced neurological disease.
Main Methods:
- Pathological examination of two affected cows.
- Bacteriological isolation of Haemophilus somnus from the central nervous system.
Main Results:
- Fibrinopurulent meningitis was observed as the primary lesion.
- Parenchymatous lesions in the central nervous system were absent.
- Haemophilus somnus was successfully isolated from the cerebral cortex in pure culture.
Conclusions:
- Atypical central nervous system lesions, specifically fibrinopurulent meningitis without parenchymatous involvement, can occur in Haemophilus somnus infections.
- This atypical presentation should be considered in the differential diagnosis of bovine neurological diseases.