Identification of a novel carbapenem-hydrolysing class D β-lactamase RAD-1 in Riemerella anatipestifer.

This study identified a novel chromosomally located class D carbapenemase RAD-1 (Bush-Jacoby functional group 2def) in R. anatipestifer SCVM0004. Moreover, bioinformatic analysis confirmed that the RAD-1 was widely prevalent and conserved in R. anatipestifer.