Publications by authors named "Dimitria A Mathys"

Objective: To estimate the prevalence of extended-spectrum cephalosporin-, carbapenem-, and fluoroquinolone-resistant bacteria of the family Enterobacteriaceae in the feces of hospitalized horses and on hospital surfaces.

Sample: Fecal and environmental samples were collected from The Ohio State University Galbreath Equine Center (OSUGEC) and a private referral equine hospital in Kentucky (KYEH). Feces were sampled within 24 hours after hospital admission and after 48 hours and 3 to 7 days of hospitalization.

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Article Synopsis
  • - The study highlights the risk of zoonotic disease transmission at agricultural fairs due to high attendance of livestock and diverse crowds, with influenza A and enteric pathogens posing significant threats.
  • - An analysis of 658 fairs revealed that while most had hand sanitation stations (77.4%), only a small fraction of attendees (7.0%) used them, and educational signage regarding hygiene was often inadequate.
  • - Although no influenza A virus was found on the sanitation stations, a high percentage (75.5%) had antimicrobial resistant coliform bacteria, indicating a need for better maintenance and educational efforts to promote hand hygiene among fairgoers.
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Wastewater flows from metropolitan areas, especially those with healthcare inputs, can serve as transport reservoirs for the dissemination of clinically-relevant antimicrobial resistant bacteria (ARB) such as carbapenem- (CR) and colistin-resistant (CoR) strains. Pulsed electric field (PEF) is an emerging wastewater management tool for reducing bacterial loads without generating environmentally harmful byproducts, but it's ability to reduce ARB and their genetic determinants is not well reported. We collected 86, 10-L raw wastewater influent samples from a large metropolitan wastewater treatment plant in Columbus, Ohio and subjected them to low (34 kV cm for 67 μsec) and high (36 kV cm for 89 μsec) PEF treatment.

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Transrectal palpation of the reproductive tract is the most common method for pregnancy determination in cattle and is considered a veterinary skill that new veterinary medicine (DVM) graduates should perform proficiently. However, using privately owned cattle to train students can be difficult because producers may believe that transrectal palpation by inexperienced students increases the risk of pregnancy wastage compared with examination by an experienced clinician. We used a randomized field trial of 1,216 healthy Holstein and Jersey cattle in 2 commercial dairy herds to estimate the effect of veterinary student transrectal palpation on early pregnancy loss.

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Carbapenemase-producing bacteria (CPB) are rare, multidrug resistant organisms most commonly associated with hospitalized patients. Metropolitan wastewater treatment plants (WWTP) treat wastewater from large geographic areas which include hospitals and may serve as epidemiologic reservoirs for the maintenance or expansion of CPB that originate from hospitals and are ultimately discharged in treated effluent. However, little is known about the potential impact of these WWTP CPB on the local surface water and their risk to the public health.

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Companion animals are likely relevant in the transmission of antimicrobial-resistant bacteria. sequence type 171 (ST171), a clone that has been implicated in clusters of infections in humans, was isolated from two dogs with clinical disease in Ohio. The canine isolates contained IncHI2 plasmids encoding Whole-genome sequencing was used to put the canine isolates in phylogenetic context with available human ST171 sequences, as well as to characterize their plasmids.

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OBJECTIVE To determine whether brachycephalic dogs were at greater risk of anesthesia-related complications than nonbrachycephalic dogs and identify other risk factors for such complications. DESIGN Retrospective cohort study. ANIMALS 223 client-owned brachycephalic dogs undergoing general anesthesia for routine surgery or diagnostic imaging during 2012 and 223 nonbrachycephalic client-owned dogs matched by surgical procedure and other characteristics.

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The dissemination of Enterobacteriaceae expressing resistance to clinically important antibiotics such as extended-spectrum cephalosporins (ESC), carbapenems, and fluoroquinolones is of critical concern to both human and veterinary medicine. In healthcare facilities, the movement of patients, personnel, and equipment provides an opportunity for Enterobacteriaceae carrying antibiotic resistance genes to disseminate in the hospital environment where they pose a threat to patients, staff, and hospital visitors. We collected environmental samples using electrostatic cloths to estimate the frequency of resistant Enterobacteriaceae contamination on human and veterinary hospital surfaces.

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Carbapenemase-producing Enterobacteriaceae (CPE) threaten both agriculture and public health. While carbapenems are restricted in food-producing animals, other β-lactams, such as ceftiofur, are frequently applied in livestock. While the relationship is not fully elucidated, ceftiofur use may provide selective pressure that promotes carbapenem resistance.

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Objective: To identify abnormalities of the celiac artery (CA) and major branches in dogs and cats by computed tomography angiography (CTA).

Study Design: Multi-institutional retrospective case series.

Animals: Two hundred fifty-four dogs and 13 cats.

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We tested 772 cloacal swabs from wild ducks to estimate the prevalence of enteric bacteria resistant to extended-spectrum cephalosporins (ESC). We found a low prevalence of the important ESC resistance genotypes, bla (5.7%) and bla (0.

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The emergence of bacterial resistance to carbapenem antibiotics is an urgent public health threat. Carbapenem drugs are a last resort treatment option for life-threatening infections. The frequent use of broad-spectrum antibiotics to treat hospitalized patients provides significant selection pressure favoring the emergence and dissemination of resistant organisms, including carbapenem-resistant Enterobacteriaceae (CRE).

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Extended-spectrum β-lactamases (ESBLs) confer bacterial resistance to critically important antimicrobials, including extended-spectrum cephalosporins (ESCs). Livestock are important reservoirs for the zoonotic food-borne transmission of ESC-resistant enteric bacteria. Our aim is to describe the potential role of migratory and resident wild birds in the epidemiology of ESBL-mediated bacterial resistance on dairy farms.

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We surveyed passerines and other terrestrial avian species for influenza A virus, resulting in molecular detection of virus from 1.5% of the 615 birds. However, no viral isolates were recovered.

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Carbapenem-resistant Enterobacteriaceae (CRE) present an urgent threat to public health. While use of carbapenem antimicrobials is restricted for food-producing animals, other β-lactams, such as ceftiofur, are used in livestock. This use may provide selection pressure favoring the amplification of carbapenem resistance, but this relationship has not been established.

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