TABLE 1.

Resistance genes of the seven strains of E. coli.

Number of E. coli	Resistance genes
E1	rmtB, tetA, tetM, bla OXA–1, bla CTX–m–u, bla CTX–m–1, sul1, sul2 sul3, floR, oqxA
E2	rmtB, tetA, tetM, bla OXA–1, blaCTX–m–u, bla CTX–m–1, sul1, sul2, oqxA
E3	armA, rmtA, rmtB, rmtC, tetA, bla OXA–2, bla CTX–m–1, qnrA, floR, oqxA, mcr-1
E4	rmtD, tetB, tetC, bla CTX–m–u, bla CTX–m–1, bla CTX–m–9, sul2, floR, mcr-1
E5	rmtD, tetA, tetM, bla TEM, bla OXA–10, bla CTX–m–u, bla CTX–m–9, qrnB, floR, oqxA, sul2, sul3
E6	rmtD, tetA, bla OXA–10, bla CTX–m–u, bla CTX–m–9, sul2, sul3, fosA3, mcr-1
E7	rmtA, rmtD, tetB, tetC, bla TEM, bla CTX–m–u, bla CTX–m–1, bla CTX–m–9, oqxA, sul1, sul2