To establish the optimal detection of third-generation cephalosporin-resistant Enterobacterales (3GCREB), the performance of four different screening methods has been investigated: stool samples without (A) and with (B) pre-enrichment and rectal swabs without (C) and with (D) pre-enrichment were contrasted. Pre-enrichment approaches (B and D) increased the detection of 3GCREB carriers by 29.4% (20/68 3GCREB carriers only found using pre-enrichment, p < 0.0001) compared to direct plating approaches (A and C). Moreover, the study demonstrates a minor advantage of stool samples in contrast to rectal swabs in both cases (with and without pre-enrichment). Registration number: DRKS00022520, 24 July 2020.
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