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© Pierre Gounon
Virus influenza purifié, agent de la grippe. Ce virus enveloppé possède un génome fragmenté : 8 segments d'ARN négatif protégés par une nucléocapside.
Publication : One health (Amsterdam, Netherlands)

Detection of two zoonotic pathogens, Seoul orthohantavirus and pathogenic Leptospira, in rats of Bamako, Mali (2021-2023).

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in One health (Amsterdam, Netherlands) - 01 Jun 2025

Garona J, Berard A, Tatard C, Kwasiborski A, Gauthier P, Ag Atteynine S, Hourdel V, Eusebe A, Diagne C, Caro V, Brouat C, Charbonnel N, Sauvage V, Granjon L, Castel G

Link to Pubmed [PMID] – 40503457

Link to DOI – 10.1016/j.onehlt.2025.101085

One Health 2025 Jun; 20(): 101085

Seoul orthohantavirus (SEOV) and pathogenic leptospires, two zoonotic agents causing similar symptoms in humans, were investigated in rat populations across several neighborhoods in Bamako, Mali. SEOV seroprevalence in brown rats (Rattus norvegicus) reached 14.8 %, while no infection was detected in black rats (Rattus rattus). Pathogenic leptospires were found in 8.7 % of brown rats, with significant inter-neighborhood variations, while only one black rat tested positive. Viral genetic analyses suggested that SEOV strains circulating in Bamako may result from a reassortment between two SEOV lineages. These findings highlight the widespread distribution of SEOV and the localized presence of pathogenic leptospires in Bamako, emphasizing the role of brown rats as reservoirs. These results can guide municipal authorities in implementing rodent control and prevention strategies to mitigate associated public health risks in Bamako.