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Studies on bovine Breda virus
F Lamouliatte1, P du Pasquier, F Rossi
1Laboratoire de Virologie, Centre Hospitalo-Universitaire de Bordeaux II, France.
Veterinary Microbiology
|December 1, 1987
Summary
Bovine Breda-like viruses were identified in diarrheic calves. These viruses show serological resemblance to human Breda virus and are related to French isolates, suggesting a potential zoonotic link.
Area of Science:
- Veterinary Virology
- Microbiology
- Animal Health
Background:
- Breda virus is a known cause of diarrhea in humans.
- The presence and characteristics of Breda-like viruses in cattle have not been extensively studied.
Purpose of the Study:
- To investigate the presence and morphology of Breda-like viruses in diarrheic calves.
- To compare bovine Breda-like viruses with human and other international isolates.
Main Methods:
- Electron microscopy was used to examine fecal samples from diarrheic calves.
- Immune electron microscopy and immunofluorescence were employed for serological and antigenic comparisons.
- Virus density was determined using sucrose gradient centrifugation.
Main Results:
- Particles resembling Breda virus were found in 16 out of 21 diarrheic calf fecal samples.
- Bovine Breda-like viruses exhibited spherical to elongated shapes (60-270 nm) with surface spikes (9-13 nm).
- Serological tests indicated a resemblance between human and bovine Breda-like viruses, and bovine isolates were related to French strains.
Conclusions:
- Bovine Breda-like viruses are present in diarrheic calves and share characteristics with human Breda virus.
- These findings suggest a potential serological relationship and possible zoonotic implications.
- The study highlights the need for further research into bovine Breda-like viruses and their role in animal and human health.