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Unveiling a Salmonella Enteritidis Outbreak in an Italian Meat Rabbit Farm: Histopathological Features and
Giulia Graziosi1, Letizia Cirasella2, Caterina Lupini1
1Department of Veterinary Medical Sciences, University of Bologna, 40064 Ozzano dell'Emilia, BO, Italy.
Animals : an Open Access Journal From MDPI
|December 30, 2025
Summary
An outbreak of Salmonella Enteritidis (SE) caused high mortality in Italian meat rabbits. Control measures were insufficient, highlighting the need for specific Salmonella programs in rabbit farming.
Area of Science:
- Veterinary Microbiology
- Animal Epidemiology
- Food Safety
Background:
- Commercial meat rabbit farms are susceptible to bacterial infections.
- Salmonella Enteritidis (SE) poses a significant zoonotic risk.
- Understanding transmission dynamics is crucial for disease control.
Purpose of the Study:
- To document an outbreak of Salmonella Enteritidis (SE) in a commercial meat rabbit farm in Italy.
- To characterize the clinical, pathological, and epidemiological features of the SE outbreak.
- To identify sources and transmission patterns of SE in rabbits.
Main Methods:
- Conducted a diagnostic and epidemiological investigation from March to December 2024.
- Collected and analyzed rectal swabs, environmental samples, and carcasses using microbiological methods.
- Performed anatomo-histopathological examination of deceased rabbits.
Main Results:
- Salmonella Enteritidis (SE) was isolated from 8.4% to 36.3% of samples.
- Co-infections with Pasteurella multocida, Escherichia coli, and Staphylococcus spp. were identified.
- Lesions included fibrinonecrotizing enterocolitis, hepatosplenomegaly, and renal damage.
Conclusions:
- SE re-emerged despite enhanced biosecurity, indicating challenges in control.
- The zoonotic potential of SE necessitates targeted control programs for rabbit farming.
- Effective Salmonella control is vital for both animal welfare and public health protection.
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