Detection of CTX-M-1 extended-spectrum beta-lactamase among ceftiofur-resistant clinical isolates of poultry.

resistance to extended-spectrum cephalosporins (ESC) conferred by cefotaximases () is a growing concern in the United States. Among food-producing animals, poultry are a major reservoir of ESC-resistant . A retrospective study was carried out to further characterize 38 ceftiofur-resistant clinical isolates obtained from poultry during 2007-2018.

Antimicrobial Resistance Among Escherichia coli Isolated from Veal Calf Operations in Pennsylvania.

Antimicrobial resistance (AR) is a pressing public health concern, and agricultural operations such as dairy and beef cattle production have been implicated as potential sources of resistant bacteria or genetic elements. This study aimed to determine the prevalence of antimicrobial-resistant Escherichia coli from calf pens in 6 auction houses (56 manure composite samples) and 12 veal calf operations (240 fecal samples in 2 visits: after the calves arrived at the farm and shortly before the animals were sent to slaughter) in the Commonwealth of Pennsylvania. A total of 1567 generic E.

Age-Associated Distribution of Antimicrobial-Resistant Salmonella enterica and Escherichia coli Isolated from Dairy Herds in Pennsylvania, 2013-2015.

Antimicrobial resistance has become a major global public health concern, and agricultural operations are often implicated as a source of resistant bacteria. This study characterized the prevalence of antimicrobial-resistant Salmonella enterica and Escherichia coli from a total of 443 manure composite samples from preweaned calves, postweaned calves, dry cows, and lactating cows from 80 dairy operations in Pennsylvania. A total of 1095 S.

Erratum for Byukusenge et al., "Complete Genome Sequences of Four Bovine Coronavirus Isolates from Pennsylvania".

[This corrects the article DOI: 10.1128/genomeA.00467-18.