C O'Connor1,2, M G Kiernan2, C Finnegan1, J Powell1, L Power1, N H O'Connell1,2, C P Dunne3. 1. Department of Clinical Microbiology, University Hospital Limerick, Limerick, Ireland. 2. Centre for Interventions in Infection, Inflammation and Immunity (4i) and Graduate-Entry Medical School, University of Limerick, Limerick, Ireland. 3. Centre for Interventions in Infection, Inflammation and Immunity (4i) and Graduate-Entry Medical School, University of Limerick, Limerick, Ireland. colum.dunne@ul.ie.
Abstract
BACKGROUND: The Mid-West of Ireland has higher than average national rates of invasive extended-spectrum beta-lactamase (ESBL) bloodstream infections and carbapenemase-producing Enterobacteriaceae (CPE), with increasing numbers of ESBL isolates detected in community-dwelling patients. AIMS: To conduct a point prevalence study in a convenience sample of the Mid-West population with the aim of determining the extent of ESBL colonisation. METHODS: Utilising anonymised community stool samples that had completed routine analysis, we conducted a point prevalence study over a 4-week period on all samples that met defined inclusion and exclusion criteria. Limited epidemiological data was recorded: (1) age of patient, (2) gender, and (3) sender location. From these stool specimens, rectal swabs were inoculated (eSwab™ 480CE, Copan, Italy), which were subsequently cultured on selective chromogenic agar (Colorex™ ESBL). Culture plates were incubated aerobically at 37 °C for 24 h. RESULTS: Of 195 samples processed, 58 % (n = 112) were from females. The median patient age was 62.4 years (range 20-94 years). 186 samples (95 %) originated from general practitioner clinics. During the study period, only nine eligible stool samples were received from LTCF (6 public). From 195 Colorex™ ESBL chromogenic agar plates cultured, no ESBL-producing organisms were detected. CONCLUSIONS: This community point prevalence study did not identify ESBL colonisation despite high numbers of patients with invasive ESBL bloodstream infections presenting for admission in our institution. We believe this may be because of our small sample size. Data regarding antimicrobial exposure and other risk factors for ESBL colonisation were also not available. We remain vigilant for ESBL-producing organisms.
BACKGROUND: The Mid-West of Ireland has higher than average national rates of invasive extended-spectrum beta-lactamase (ESBL) bloodstream infections and carbapenemase-producing Enterobacteriaceae (CPE), with increasing numbers of ESBL isolates detected in community-dwelling patients. AIMS: To conduct a point prevalence study in a convenience sample of the Mid-West population with the aim of determining the extent of ESBL colonisation. METHODS: Utilising anonymised community stool samples that had completed routine analysis, we conducted a point prevalence study over a 4-week period on all samples that met defined inclusion and exclusion criteria. Limited epidemiological data was recorded: (1) age of patient, (2) gender, and (3) sender location. From these stool specimens, rectal swabs were inoculated (eSwab™ 480CE, Copan, Italy), which were subsequently cultured on selective chromogenic agar (Colorex™ ESBL). Culture plates were incubated aerobically at 37 °C for 24 h. RESULTS: Of 195 samples processed, 58 % (n = 112) were from females. The median patient age was 62.4 years (range 20-94 years). 186 samples (95 %) originated from general practitioner clinics. During the study period, only nine eligible stool samples were received from LTCF (6 public). From 195 Colorex™ ESBL chromogenic agar plates cultured, no ESBL-producing organisms were detected. CONCLUSIONS: This community point prevalence study did not identify ESBL colonisation despite high numbers of patients with invasive ESBL bloodstream infections presenting for admission in our institution. We believe this may be because of our small sample size. Data regarding antimicrobial exposure and other risk factors for ESBL colonisation were also not available. We remain vigilant for ESBL-producing organisms.
Authors: G Bonkat; G Müller; O Braissant; R Frei; S Tschudin-Suter; M Rieken; S Wyler; T C Gasser; A Bachmann; A F Widmer Journal: World J Urol Date: 2013-01-29 Impact factor: 4.226
Authors: Colum P Dunne; Minna M Keinänen-Toivola; Anne Kahru; Birgit Teunissen; Hulya Olmez; Isabel Gouveia; Luis Melo; Kazimierz Murzyn; Martina Modic; Merja Ahonen; Pete Askew; Theofilos Papadopoulos; Christian Adlhart; Francy R L Crijns Journal: Bioengineered Date: 2017-05-19 Impact factor: 3.269
Authors: Kornelia Maria Dembicka; James Powell; Nuala H O'Connell; Noreen Hennessy; Grainne Brennan; Colum P Dunne Journal: Ir J Med Sci Date: 2021-09-10 Impact factor: 2.089