Decreased detection of ESBL- or pAmpC-producing Escherichia coli in broiler breeders imported into Sweden
Abstract In the spring of 2010, it was discovered that a large proportion of broilers in Sweden were colonized with Escherichia coli producing extended-spectrum beta-lactamases (ESBL) or plasmid mediated AmpC (pAmpC).It was hypothesized that here the high prevalence was due to transfer from an upper level in the production pyramid and sampling upwa