Antimicrobial Susceptibility Profiles of Fecal Escherichia Coli and Salmonella Spp. From Equids in the United States: Association with Management Factor

2021 ◽  
Author(s):  
Allison B. Kohnen ◽  
Diana M. Short ◽  
Katherine L. Marshall ◽  
Kim L. Cook ◽  
Kristina Lantz ◽  
...  
Keyword(s):  
United States ◽  
Escherichia Coli ◽  
Antimicrobial Susceptibility ◽  
The United States ◽  
Salmonella Spp ◽  
Susceptibility Profiles

Disinfectant and Antibiotic Susceptibility Profiles of Escherichia coli O157:H7 Strains from Cattle Carcasses, Feces, and Hides and Ground Beef from the United States†

2013 ◽  
Vol 76 (1) ◽  
pp. 6-17 ◽  
Author(s):  
ROSS C. BEIER ◽  
TONI L. POOLE ◽  
DAYNA M. BRICHTA-HARHAY ◽  
ROBIN C. ANDERSON ◽  
KENNETH M. BISCHOFF ◽  
...  
Keyword(s):  
United States ◽  
Escherichia Coli ◽  
Antibiotic Resistance ◽  
Antibiotic Susceptibility ◽  
Ground Beef ◽  
The United States ◽  
Escherichia Coli O157 ◽  
E Coli ◽  
Inducible Resistance ◽  
Susceptibility Profiles

The disinfectant and antibiotic susceptibility profiles of 344 Escherichia coli O157:H7 strains from cattle carcasses, feces, and hides and ground beef from the United States were determined. A low prevalence of antibiotic resistance was observed (14%). The highest prevalences of resistance were to sulfisoxazole (10.5%), tetracycline (9.9%), streptomycin (7%), and chloramphenicol (4.9%). Four strains were resistant to eight antibiotics (two strains from ground beef and one strain each from hide and preevisceration carcass swabs of cull cattle at harvest). Pulsed-field gel electrophoresis analysis of the E. coli O157:H7 strains revealed two major groups (designated 1 and 2) composed of 17 and 20 clusters, respectively. Clusters 1A, 1B, 1C, and 1G.1 were associated with multidrug-resistant strains. There was no observed correlation between disinfectant resistance and antibiotic resistance. Sixty-nine (20%) of the 344 strains were resistant to chlorhexidine or benzalkonium chloride or the MICs of benzyldimethyldodecylammonium chloride were elevated. Inducible resistance was observed at elevated concentrations of antibiotics (1.4%) and disinfectants (6.1%). The highest rate of disinfectant inducible resistance was to OdoBan, quaternary ammonium chlorides, and the surface disinfectants F25, FS512, and MG, which are used in dairies, restaurants, and food processing plants. High MICs (1,024 to 4,096 μg/ml) of acetic, lactic, and citric acids were found. The decreasing order of acid potency based on molar MICs (MICsmolar) was acetic, citric, and lactic acid. The correlation of the concentration of dissociated organic acids and MICsmolar strongly suggests that the observed inhibition of E. coli O157:H7 was primarily due to dissociated forms of the acids.

scholarly journals First Detection of CTX-M and SHV Extended-Spectrum β-Lactamases in Escherichia coli Urinary Tract Isolates from Dogs and Cats in the United States

2010 ◽  
Vol 54 (8) ◽  
pp. 3489-3492 ◽  
Author(s):  
Alexandra O'Keefe ◽  
Tabitha A. Hutton ◽  
Dieter M. Schifferli ◽  
Shelley C. Rankin
Keyword(s):  
United States ◽  
Escherichia Coli ◽  
Urinary Tract ◽  
Urinary Tract Infections ◽  
Antimicrobial Susceptibility ◽  
Susceptibility Testing ◽  
The United States ◽  
Extended Spectrum ◽  
Tract Infections ◽  
M 14

ABSTRACT One hundred fifty canine and feline Escherichia coli isolates associated with urinary tract infections were screened for the presence of extended-spectrum β-lactamase (ESBL) genes. Out of 60 isolates suspected to be ESBL positive based on antimicrobial susceptibility testing, 11 ESBLs were identified, including one SHV-12 gene, one CTX-M-14 gene, and nine CTX-M-15 genes. This study provides the first report of CTX-M- and SHV-type ESBLs in dogs and cats in the United States.

Clonal Complexes and Antimicrobial Susceptibility Profiles ofStaphylococcus pseudintermediusIsolates from Dogs in the United States

2018 ◽  
Vol 24 (1) ◽  
pp. 83-88 ◽  
Author(s):  
Ricardo Videla ◽  
Samar M. Solyman ◽  
Akshar Brahmbhatt ◽  
Leslie Sadeghi ◽  
David A. Bemis ◽  
...  
Keyword(s):  
United States ◽  
Antimicrobial Susceptibility ◽  
The United States ◽  
Susceptibility Profiles

scholarly journals Antimicrobial Susceptibility to Azithromycin among Salmonella enterica Isolates from the United States

2011 ◽  
Vol 55 (9) ◽  
pp. 3985-3989 ◽  
Author(s):  
Maria Sjölund-Karlsson ◽  
Kevin Joyce ◽  
Karen Blickenstaff ◽  
Takiyah Ball ◽  
Jovita Haro ◽  
...  
Keyword(s):  
United States ◽  
Antimicrobial Susceptibility ◽  
Salmonella Enterica ◽  
Antimicrobial Agents ◽  
The United States ◽  
Outcome Data ◽  
Content Type ◽  
Susceptibility Data ◽  
Retail Meat ◽  
Clinical Breakpoints

ABSTRACTDue to emerging resistance to traditional antimicrobial agents, such as ampicillin, trimethoprim-sulfamethoxazole, and chloramphenicol, azithromycin is increasingly used for the treatment of invasiveSalmonellainfections. In the present study, 696 isolates of non-TyphiSalmonellacollected from humans, food animals, and retail meats in the United States were investigated for antimicrobial susceptibility to azithromycin. Seventy-twoSalmonella entericaserotype Typhi isolates from humans were also tested. For each isolate, MICs of azithromycin and 15 other antimicrobial agents were determined by broth microdilution. Among the non-TyphiSalmonellaisolates, azithromycin MICs among human isolates ranged from 1 to 32 μg/ml, whereas the MICs among the animal and retail meat isolates ranged from 2 to 16 μg/ml and 4 to 16 μg/ml, respectively. AmongSalmonellaserotype Typhi isolates, the azithromycin MICs ranged from 4 to 16 μg/ml. The highest MIC observed in the present study was 32 μg/ml, and it was detected in three human isolates belonging to serotypes Kentucky, Montevideo, and Paratyphi A. Based on our findings, we propose an epidemiological cutoff value (ECOFF) for wild-typeSalmonellaof ≤16 μg/ml of azithromycin. The susceptibility data provided could be used in combination with clinical outcome data to determine tentative clinical breakpoints for azithromycin andSalmonella enterica.

scholarly journals Occurrence and antimicrobial susceptibility of Escherichia coli and Salmonella spp. isolated from zoom-koom beverage and ice in Ouagadougou, Burkina Faso

2014 ◽  
Vol 8 (35) ◽  
pp. 3243-3249 ◽  
Author(s):  
Bsadjo-Tchamba Gertrude ◽  
Ibrahim Bawa Hadiza ◽  
Nzouankeu Ariane ◽  
Juste O. Bonkoungou Isidore ◽  
Zongo Cheikna ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Burkina Faso ◽  
Antimicrobial Susceptibility ◽  
Salmonella Spp
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