Santé Animale

Transmission of MPXV from fire-footed rope squirrels to sooty mangabeys

K
Dr Kouadio Léonce
UPGC — Université Péléforo Gon Coulibaly
· Carme Riutord-Fe, Jasmin Schlotterbeck, Lorenzo Lagostina, Leonce Kouadio, ... Livia V. Patrono, Fabian H. Leendertz

Résumé

Mpox, caused by the monkeypox virus (MPXV; Orthopoxvirus monkeypox), is on the rise in West and Central Africa1–3. African rodents, especially squirrels, are suspected to be involved in MPXV emergence, but no evidence of a direct transmission to humans or non-human primates has been established4–9. Here we describe an outbreak of MPXV in a group of wild sooty mangabeys (Cercocebus atys) in Taï National Park (Côte d’Ivoire). The outbreak affected one-third of the group, killing four infants. To track its origin, we analysed rodents and wildlife carcasses from the region. We identified a MPXV-infected fire-footed rope squirrel (Funisciurus pyrropus), found dead 3 km from the mangabey territory 12 weeks before the outbreak. MPXV genomes from the squirrel and the mangabey were nearly identical. A video record from 2014 showed a mangabey from this group eating the same squirrel species and diet metabarcoding of faecal samples collected from mangabeys before the outbreak identified two samples containing fire-footed rope squirrel DNA. One of these samples was also the first positive for MPXV. This represents a rare case of direct detection of interspecies transmission. Our findings indicate that rope squirrels were the source of the MPXV outbreak in mangabeys. Because squirrels and non-human primates are hunted, traded and consumed by humans in West and Central Africa exposure to these animals probably represents risk for zoonotic transmission of MPXV.

Mots-clés

Mpox zoonotic transmission Taï National Park -Côte d’Ivoire

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