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Case Report


Severe pneumonia in a street rat (Rattus norvegicus) caused by Rodentibacter rarus strain RMC2

Hacène Medkour, Younes Laidoudi, Handi Dahmana, Bastien Salvi, Hubert Lepidi, Oleg Mediannikov, Bernard Davoust.


Cited By:5

Abstract
Background: Rodents are one of the most dangerous reservoirs of infectious diseases. Gradually, rats have become predominant in cities, closely in contact with humans, pets and other animals. Consequently, they increase the transmission risk of pathogens.
Case Description: Here, we report an original case of bacterial pneumonia in a street rat (Rattus norvegicus). The rat was found dead in a street in the chief town of Marseille (France) after being run over by a car. The necropsy of the corpse revealed a generalized granulomatous pneumonia in almost all the pulmonary lobes. Lung lesions, predominantly multiple fibro-inflammatory areas are preassembly the witness of an infectious etiology. Bacterial isolation was performed from lung tissues. Colonies were identified by MALDI-TOF MS and confirmed by 16S rRNA sequencing. The following bacteria were identified: Staphylococcus cohnii, Bordetella bronchiseptica, B. parapertussi, Corynebacterium glucuronolyticum, Pelistega suis and Rodentibacter rarus. Based on histopathological diagnosis and the avoidance approach, the most likely etiological agent of the pneumonia is therefore R. rarus, a little-known Pasteurellales bacterium that is closely related to R. pneumotropicus.
Conclusion: These data emphasis the severity of R. rarus infection in rodent and pointing out a potential risk for other animals (dogs, cats, birds) as well as humans. The health monitoring program for rodents and rabbits pasteurellosis should now include R. rarus. Therefore, the pathological effect of Rodentibacter species and/or strains needs to be better explored.

Key words: Rodents, Rattus norvegicus, Rodentibacter rarus, Pasteurellosis, Pneumonia


 
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How to Cite this Article
Pubmed Style

Medkour H, Laidoudi Y, Dahmana H, Salvi B, Lepidi H, Mediannikov O, Davoust B. Severe pneumonia in a street rat (Rattus norvegicus) caused by Rodentibacter rarus strain RMC2. Open Vet J. 2021; 11(1): 0-0. doi:10.5455/OVJ.v11.i1.24

Web Style

Medkour H, Laidoudi Y, Dahmana H, Salvi B, Lepidi H, Mediannikov O, Davoust B. Severe pneumonia in a street rat (Rattus norvegicus) caused by Rodentibacter rarus strain RMC2. https://www.openveterinaryjournal.com/?mno=42844 [Access: April 28, 2025]. doi:10.5455/OVJ.v11.i1.24

AMA (American Medical Association) Style

Medkour H, Laidoudi Y, Dahmana H, Salvi B, Lepidi H, Mediannikov O, Davoust B. Severe pneumonia in a street rat (Rattus norvegicus) caused by Rodentibacter rarus strain RMC2. Open Vet J. 2021; 11(1): 0-0. doi:10.5455/OVJ.v11.i1.24


Vancouver/ICMJE Style

Medkour H, Laidoudi Y, Dahmana H, Salvi B, Lepidi H, Mediannikov O, Davoust B. Severe pneumonia in a street rat (Rattus norvegicus) caused by Rodentibacter rarus strain RMC2. Open Vet J. (2021), [cited April 28, 2025]; 11(1): 0-0. doi:10.5455/OVJ.v11.i1.24


Harvard Style

Medkour, H., Laidoudi, . Y., Dahmana, . H., Salvi, . B., Lepidi, . H., Mediannikov, . O. & Davoust, . B. (2021) Severe pneumonia in a street rat (Rattus norvegicus) caused by Rodentibacter rarus strain RMC2. Open Vet J, 11 (1), 0-0. doi:10.5455/OVJ.v11.i1.24


Turabian Style

Medkour, Hacène, Younes Laidoudi, Handi Dahmana, Bastien Salvi, Hubert Lepidi, Oleg Mediannikov, and Bernard Davoust. 2021. Severe pneumonia in a street rat (Rattus norvegicus) caused by Rodentibacter rarus strain RMC2. Open Veterinary Journal, 11 (1), 0-0. doi:10.5455/OVJ.v11.i1.24


Chicago Style

Medkour, Hacène, Younes Laidoudi, Handi Dahmana, Bastien Salvi, Hubert Lepidi, Oleg Mediannikov, and Bernard Davoust. "Severe pneumonia in a street rat (Rattus norvegicus) caused by Rodentibacter rarus strain RMC2." Open Veterinary Journal 11 (2021), 0-0. doi:10.5455/OVJ.v11.i1.24


MLA (The Modern Language Association) Style

Medkour, Hacène, Younes Laidoudi, Handi Dahmana, Bastien Salvi, Hubert Lepidi, Oleg Mediannikov, and Bernard Davoust. "Severe pneumonia in a street rat (Rattus norvegicus) caused by Rodentibacter rarus strain RMC2." Open Veterinary Journal 11.1 (2021), 0-0. Print. doi:10.5455/OVJ.v11.i1.24


APA (American Psychological Association) Style

Medkour, H., Laidoudi, . Y., Dahmana, . H., Salvi, . B., Lepidi, . H., Mediannikov, . O. & Davoust, . B. (2021) Severe pneumonia in a street rat (Rattus norvegicus) caused by Rodentibacter rarus strain RMC2. Open Veterinary Journal, 11 (1), 0-0. doi:10.5455/OVJ.v11.i1.24


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