Spread of blaCTX-M-15-producing Enterobacteriaceae and OXA-23-producing Acinetobacter baumannii ST2 in Tunisian seafood [PublishAheadOfPrint]

Bivalves are filter-feeding animals and markers of bacterial pollution. We report a massive spread of bla_CTX-M-15 through dominant E. coli and K. pneumoniae lineages and/or plasmid subtypes (F31:A4:B1) as well as OXA-23-producing Acinetobacter baumannii ST2 in seafood, highlighting a direct risk for the consumer. These findings should urge authorities to consider hospital effluents, but also farm and urban effluents, as important sources of ESBL/carbapenemase-producers that filter-feeding animals can concentrate and further spread to humans.

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