Chromosomal and Plasmid-Borne Tigecycline Resistance Genes tet(X3) and tet(X4) in Dairy Cows on a Chinese Farm.

ABSTRACT: We isolated 47 Acinetobacter strains carrying tet(X3) and 4 ST767 E. coli strains carrying tet(X4) from 296 rectal swab samples from dairy cows on a Chinese farm. tet(X3) was located on chromosomes or diverse plasmids, and tet(X4) was located on IncFIBκ/FIA(HI1)/X1 nontransferable plasmid. The coexistence of tet(X3) and carbapenemase genes, including bla_OXA-58 and bla_NDM-1, was detected in 9 Acinetobacter spp. These findings suggested that the use of tetracycline and other antibiotics in food production warrants urgent attention.

SUBMITTER: Zhang R 

PROVIDER: S-EPMC7577139 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature