Related Experiment Videos
Phycomycosis associated with encephalitis caused by Haemophilus somnus in a heifer
Journal of the American Veterinary Medical Association
|September 1, 1977
Abstract:
Numerous fungal hyphae resembling those of a phycomycete were found in thrombi, vessel walls, and areas of inflammatory cell infiltration within a large focus of necrosis in the brainstem of a 2-year-old heifer. Haemophilus somnus and Pasteurella multocida were isolated from the same lesion. Antemortem hyperglycemia was also demonstrated.
Insights
A brainstem lesion in a heifer revealed fungal hyphae and bacterial pathogens, suggesting a complex infection. This case highlights the potential for co-infections in bovine central nervous system diseases.
Area of Science:
- Veterinary Pathology
- Mycology
- Bacteriology
Background:
- Central nervous system (CNS) infections in cattle can lead to severe neurological signs.
- Fungal and bacterial co-infections present diagnostic challenges in veterinary medicine.
Observation:
- A 2-year-old heifer presented with a large necrotic brainstem lesion.
- Microscopic examination revealed fungal hyphae consistent with phycomycetes within thrombi, vessel walls, and inflammatory infiltrates.
Findings:
- Isolation of Haemophilus somnus and Pasteurella multocida from the affected brainstem tissue.
- Evidence of antemortem hyperglycemia in the affected heifer.
Implications:
- This case suggests a potential role for phycomycetes in bovine brainstem necrosis, possibly in conjunction with bacterial agents like H. somnus and P. multocida.
- The presence of hyperglycemia may have influenced the susceptibility or progression of the infection.
- Further investigation into fungal and bacterial co-infections affecting the bovine CNS is warranted.