In 2019, caecal samples from fattening pigs sampled at slaughter were included in the NORM-VET surveillance programme [17 ]. Only one pig per herd was included. These samples were available for the current study, and were screened for the presence of Klebsiella spp. Each sample was plated directly onto Simmons citrate agar with 1 % inositol (SCAI; Oxoid) and incubated at 37 °C for 48 h. Presumptive Klebsiella spp. colonies were selected based on morphology, and confirmed as Klebsiella spp. with a MALDI-TOF instrument (Bruker Daltonik).
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