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Kassaian N, Nematbakhsh S, Yazdani M, Rostami S, Nokhodian Z, Ataei B. Epidemiology of Bloodstream Infections and Antimicrobial Susceptibility Pattern in ICU and Non-ICU Wards: A Four-Year Retrospective Study in Isfahan, Iran. Adv Biomed Res 2023; 12:106. [PMID: 37288028 PMCID: PMC10241621 DOI: 10.4103/abr.abr_320_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 02/01/2023] [Accepted: 02/05/2023] [Indexed: 06/09/2023] Open
Abstract
Background Bloodstream infections (BSIs) are one of the causes of morbidity and mortality in hospitalised patients. This study evaluated BSI's incidence, trend, antimicrobial susceptibility patterns and mortality in AL Zahra Hospital in Isfahan, Iran. Materials and Methods This retrospective study was conducted in AL Zahra Hospital from March 2017 to March 2021. The Iranian nosocomial infection surveillance system was used for data gathering. The data included demographic and hospital data, type of bacteria, and antibiotic susceptibility findings and were analysed in SPSS-18 software. Results The incidence of BSIs was 1.67% and 0.47%, and the mortality was 30% and 15.2% in the intensive care unit (ICU) and non-ICU wards, respectively. In the ICU, the mortality was correlated with the use of the catheter, type of organism and year of study, but in non-ICU, correlated with age, gender, use of the catheter, ward, year of study and duration between the incidence of BSIs and discharging/death. Staphylococcus epidermidis, Acinetobacter spp. and Klebsiella spp. were the most frequent germs isolated in all wards. Vancomycin (63.6%) and Gentamycin (37.7%) for ICU and Vancomycin (55.6%) and Meropenem (53.3) for other wards were the most sensitive antibiotics. Conclusion Despite the few rate of BSI in the last four years in AL Zahra Hospital, our data showed that its incidence and mortality in the ICU ward are significantly more than in other hospital wards. We recommend prospective multicentre studies to know the total incidence of BSI, local risk factors and patterns of pathogens causing BSI.
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Affiliation(s)
- Nazila Kassaian
- Nosocomial Infection Diseases Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Shadnosh Nematbakhsh
- Infectious Diseases and Tropical Medicine Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammadreza Yazdani
- Infectious Diseases and Tropical Medicine Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Soodabeh Rostami
- Nosocomial Infection Diseases Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Zary Nokhodian
- Infectious Diseases and Tropical Medicine Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Behrooz Ataei
- Nosocomial Infection Diseases Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
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Bonazzetti C, Morena V, Giacomelli A, Oreni L, Casalini G, Galimberti LR, Bolis M, Rimoldi M, Ballone E, Colombo R, Ridolfo AL, Antinori S. Unexpectedly High Frequency of Enterococcal Bloodstream Infections in Coronavirus Disease 2019 Patients Admitted to an Italian ICU: An Observational Study. Crit Care Med 2021; 49:e31-e40. [PMID: 33122577 PMCID: PMC7737701 DOI: 10.1097/ccm.0000000000004748] [Citation(s) in RCA: 77] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
OBJECTIVES We aimed to assess the frequency of ICU-acquired bloodstream infections in coronavirus disease 2019 patients. DESIGN Retrospective observational study. SETTING The emergency expansion of an ICU from eight general beds to 30 coronavirus disease 2019 beds. PARTICIPANTS Patients with coronavirus disease 2019 admitted to the ICU of Luigi Sacco Hospital (Milan, Italy) for greater than or equal to 48 hours between February 21, 2020, and April 30, 2020. INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS The frequency of bloodstream infections per 1,000 days of ICU stay was calculated in 89 coronavirus disease 2019 patients, and the cumulative probability of bloodstream infection was estimated using death and ICU discharge as competing events. Sixty patients (67.4%) experienced at least one of the 93 recorded episodes of bloodstream infection, a frequency of 87 per 1,000 days of ICU stay (95% CI, 67-112).The patients who experienced a bloodstream infection had a higher Sequential Organ Failure Assessment score upon ICU admission (9.5; interquartile range, 8-12 vs 8, interquartile range, 5-10; p = 0.042), a longer median ICU stay (15 d; interquartile range, 11-23 vs 8, interquartile range, 5-12; p < 0.001), and more frequently required invasive mechanical ventilation (98.3% vs 82.8%; p = 0.013) than those who did not. The median time from ICU admission to the first bloodstream infection episode was 10 days. Gram-positive bacteria accounted for 74 episodes (79.6%), with Enterococcus species being the most prevalent (53 episodes, 55.8%). Thirty-two isolates (27.3%) showed multidrug resistance. CONCLUSIONS Coronavirus disease 2019 seemed to increase the frequency of bloodstream infections (particularly Enterococcus-related bloodstream infection) after ICU admission. This may have been due to enteric involvement in patients with severe coronavirus disease 2019 and/or limitations in controlling the patient-to-patient transmission of infectious agents in extremely challenging circumstances.
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Affiliation(s)
- Cecilia Bonazzetti
- Department of Infectious Diseases, ASST Fatebenefratelli-Sacco, Luigi Sacco University Hospital, Milan, Italy
- Luigi Sacco Department of Biomedical and Clinical Sciences, University of Milan, Milan, Italy
| | - Valentina Morena
- Department of Infectious Diseases, ASST Fatebenefratelli-Sacco, Luigi Sacco University Hospital, Milan, Italy
- Luigi Sacco Department of Biomedical and Clinical Sciences, University of Milan, Milan, Italy
| | - Andrea Giacomelli
- Department of Infectious Diseases, ASST Fatebenefratelli-Sacco, Luigi Sacco University Hospital, Milan, Italy
- Luigi Sacco Department of Biomedical and Clinical Sciences, University of Milan, Milan, Italy
| | - Letizia Oreni
- Department of Infectious Diseases, ASST Fatebenefratelli-Sacco, Luigi Sacco University Hospital, Milan, Italy
| | - Giacomo Casalini
- Department of Infectious Diseases, ASST Fatebenefratelli-Sacco, Luigi Sacco University Hospital, Milan, Italy
- Luigi Sacco Department of Biomedical and Clinical Sciences, University of Milan, Milan, Italy
| | - Laura Rina Galimberti
- Department of Infectious Diseases, ASST Fatebenefratelli-Sacco, Luigi Sacco University Hospital, Milan, Italy
| | - Matteo Bolis
- Department of Infectious Diseases, ASST Fatebenefratelli-Sacco, Luigi Sacco University Hospital, Milan, Italy
- Luigi Sacco Department of Biomedical and Clinical Sciences, University of Milan, Milan, Italy
| | - Matteo Rimoldi
- Technical and Rehabilitation Nursing Hospital Service, Epidemiological Office, SITRA, ASST Fatebenefratelli-Sacco, Luigi Sacco Hospital, Milan, Italy
| | - Elisabetta Ballone
- Department of Anesthesiology and Intensive Care, ASST Fatebenefratelli-Sacco, Luigi Sacco Hospital, Milan, Italy
| | - Riccardo Colombo
- Department of Anesthesiology and Intensive Care, ASST Fatebenefratelli-Sacco, Luigi Sacco Hospital, Milan, Italy
| | - Anna Lisa Ridolfo
- Department of Infectious Diseases, ASST Fatebenefratelli-Sacco, Luigi Sacco University Hospital, Milan, Italy
| | - Spinello Antinori
- Department of Infectious Diseases, ASST Fatebenefratelli-Sacco, Luigi Sacco University Hospital, Milan, Italy
- Luigi Sacco Department of Biomedical and Clinical Sciences, University of Milan, Milan, Italy
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How prepared are we for cross-border outbreaks? An exploratory analysis of cross-border response networks for outbreaks of multidrug resistant microorganisms in the Netherlands and Germany. PLoS One 2019; 14:e0219548. [PMID: 31291355 PMCID: PMC6619808 DOI: 10.1371/journal.pone.0219548] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 06/26/2019] [Indexed: 12/13/2022] Open
Abstract
Background The emergence and spread of multidrug resistant microorganisms is a serious threat to transnational public health. Therefore, it is vital that cross-border outbreak response systems are constantly prepared for fast, rigorous, and efficient response. This research aims to improve transnational collaboration by identifying, visualizing, and exploring two cross-border response networks that are likely to unfold during outbreaks involving the Netherlands and Germany. Methods Quantitative methods were used to explore response networks during a cross-border outbreak of carbapenem resistant Enterobacteriaceae in healthcare settings. Eighty-six Dutch and German health professionals reflected on a fictive but realistic outbreak scenario (response rate ≈ 70%). Data were collected regarding collaborative relationships between stakeholders during outbreak response, prior working relationships, and trust in the networks. Network analysis techniques were used to analyze the networks on the network level (density, centralization, clique structures, and similarity of tie constellations between two networks) and node level (brokerage measures and degree centrality). Results Although stakeholders mainly collaborate with stakeholders belonging to the same country, transnational collaboration is present in a centralized manner. Integration of the network is reached, since several actors are beneficially positioned to coordinate transnational collaboration. However, levels of trust are moderately low and prior-existing cross-border working relationships are sparse. Conclusion Given the explored network characteristics, we conclude that the system has a promising basis to achieve effective coordination. However, future research has to determine what kind of network governance form might be most effective and efficient in coordinating the necessary cross-border response activity. Furthermore, networks identified in this study are not only crucial in times of outbreak containment, but should also be fostered in times of non-crisis.
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Sonti R, Conroy ME, Welt EM, Hu Y, Luta G, Jamieson DB. Modeling risk for developing drug resistant bacterial infections in an MDR-naive critically ill population. Ther Adv Infect Dis 2017; 4:95-103. [PMID: 28748088 DOI: 10.1177/2049936117715403] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
PURPOSE To create a model predictive of an individual's risk of developing a de novo multidrug-resistant (MDR) infection while in the intensive care unit (ICU). METHODS This is a case-control study in which 189 ICU patients diagnosed with their first infection with an MDR organism were compared on the basis of demographic, past medical and clinical variables to randomly selected ICU patients without such an infection, era-matched in a 2:1 ratio. A prediction tool was derived using multivariate logistic regression. RESULTS Five features remained predictive of developing an infection with a drug-resistant pathogen: hospitalization within a year [adjusted odds ratio (OR) 2.14], chronic hemodialysis (3.86), underlying oxygen-dependent pulmonary disease (1.86), endotracheal intubation within 24 h (2.46) and reason for ICU admission (respiratory failure 2.89, non-respiratory failure, non-shock presentation 1.85). Using a scoring system (0-7 points) based on the adjusted OR, risk categories were derived (low: 0-2 points, intermediate: 3-4 points and high risk: 5-7 points). The negative predictive value at a score cutoff of 2 is excellent (88.9%). CONCLUSIONS A clinical prediction rule comprised of five easily measured ICU variables reasonably discriminates between patients who will develop their first MDR infection versus those who will not.
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Affiliation(s)
- Rajiv Sonti
- Division of Pulmonary, Critical Care and Sleep Medicine, Medstar Georgetown University Hospital, Washington, DC, USA
| | - Megan E Conroy
- Division of Pulmonary, Critical Care and Sleep Medicine, Medstar Georgetown University Hospital, Washington, DC, USA
| | - Elena M Welt
- Division of Pulmonary, Critical Care and Sleep Medicine, Medstar Georgetown University Hospital, Washington, DC, USA
| | - Yi Hu
- Department of Biostatistics, Bioinformatics & Biomathematics, Georgetown University, Washington, DC, USA
| | - George Luta
- Department of Biostatistics, Bioinformatics & Biomathematics, Georgetown University, Washington, DC, USA
| | - Daniel B Jamieson
- Division of Pulmonary, Critical Care and Sleep Medicine, Medstar Georgetown University Hospital, Washington, DC, USA
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Willemsen I, Oome S, Verhulst C, Pettersson A, Verduin K, Kluytmans J. Trends in Extended Spectrum Beta-Lactamase (ESBL) Producing Enterobacteriaceae and ESBL Genes in a Dutch Teaching Hospital, Measured in 5 Yearly Point Prevalence Surveys (2010-2014). PLoS One 2015; 10:e0141765. [PMID: 26528549 PMCID: PMC4631330 DOI: 10.1371/journal.pone.0141765] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Accepted: 10/13/2015] [Indexed: 11/18/2022] Open
Abstract
This paper describes the trends in prevalence of ESBL producing Enterobacteriaceae (ESBL-E) and ESBL genes, measured in five consecutive yearly Point Prevalence Surveys (PPS). All patients present in the hospital and in a day-care clinic (including patients on dialysis) on the day of the survey, were screened for perianal ESBL-E carriage. Perianal swabs were taken and cultured using an enrichment broth and a selective agar plate. Both phenotypic and genotypic methods were used to detect the production of ESBL, presence of ESBL-genes and clonal relatedness. Out of 2,695 patients, 135 (5.0%) were tested ESBL-E positive. The overall ESBL-E prevalence was stable over the years. Overall 5.2% of all ESBL-E were acquired by nosocomial transmission. A relative decrease of CTX-M-1-1-like ESBL genes (from 44 to 25%, p = 0.026) was observed, possibly related to the strong (>60%) decrease in antibiotic use in livestock in our country during the same period.
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Affiliation(s)
- Ina Willemsen
- Laboratory for Microbiology and Infection Control, Amphia Hospital, Breda, The Netherlands
- * E-mail:
| | - Stijn Oome
- Laboratory for Microbiology and Infection Control, Amphia Hospital, Breda, The Netherlands
| | - Carlo Verhulst
- Laboratory for Microbiology and Infection Control, Amphia Hospital, Breda, The Netherlands
| | - Annika Pettersson
- Department of Medical Microbiology and Infection Control, VU University Medical Center, Amsterdam, The Netherlands
| | - Kees Verduin
- Laboratory for Microbiology and Infection Control, Amphia Hospital, Breda, The Netherlands
| | - Jan Kluytmans
- Laboratory for Microbiology and Infection Control, Amphia Hospital, Breda, The Netherlands
- Department of Medical Microbiology and Infection Control, VU University Medical Center, Amsterdam, The Netherlands
- Julius Center for Health Sciences and Primary Care, UMC Utrecht, Utrecht, the Netherlands
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Ridolfo AL, Rimoldi SG, Pagani C, Marino AF, Piol A, Rimoldi M, Olivieri P, Galli M, Dolcetti L, Gismondo MR. Diffusion and transmission of carbapenem-resistant Klebsiella pneumoniae in the medical and surgical wards of a university hospital in Milan, Italy. J Infect Public Health 2015; 9:24-33. [PMID: 26116453 DOI: 10.1016/j.jiph.2015.05.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Revised: 05/04/2015] [Accepted: 05/18/2015] [Indexed: 10/23/2022] Open
Abstract
Carbapenem-resistant Klebsiella pneumoniae (CRKP) is emerging as a public health problem worldwide. In Italy, a remarkable increase in CRKP cases has been reported since 2010. In this study, CRKP diffusion, distribution and in-hospital transmission trends were evaluated in a university hospital in Milan, Italy, from January 2012 to December 2013. Isolates from 63 newly detected CRKP-positive patients were genotyped, and possible transmission was determined by combining the molecular results with data concerning the patients' admission and in-hospital transfers. Most of the cases (90.4%) were from general medical and surgery wards, and the remaining 9.6% were from the intensive care unit. Fifteen of the 46 hospital-associated cases (32.6%) were attributable to in-hospital transmission. After the introduction of targeted and hospital-wide control measures, the transmission index significantly decreased from 0.65 to 0.13 (p=0.01). There was also a decrease in the overall nosocomial case incidence, from 0.37 to 0.17 per 1000 person-days (p=0.07). Our findings indicate that the spread of CRKP in Northern Italy hospitals may go far beyond high-risk settings (i.e., intensive care units) and that strict surveillance should be extended to general areas of care.
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Affiliation(s)
- Anna L Ridolfo
- Direzione Medica di Presidio, Azienda Ospedaliera-Polo Universitario Luigi Sacco, Via G.B. Grassi 74, 20156 Milano, Italy; Sezione di Malattie Infettive e Immunopatologia, Dipartimento di Scienze Cliniche, Ospedale Luigi Sacco, Università degli Studi di Milano, Via G.B. Grassi 74, 20156 Milano, Italy.
| | - Sara G Rimoldi
- Laboratorio di Microbiologia Clinica, Virologia e Diagnostica Bioemergenze, Ospedale Luigi Sacco, Università degli Studi di Milano, Via G.B. Grassi 74, 20156 Milano, Italy
| | - Cristina Pagani
- Laboratorio di Microbiologia Clinica, Virologia e Diagnostica Bioemergenze, Ospedale Luigi Sacco, Università degli Studi di Milano, Via G.B. Grassi 74, 20156 Milano, Italy
| | - Andrea F Marino
- Direzione Medica di Presidio, Azienda Ospedaliera-Polo Universitario Luigi Sacco, Via G.B. Grassi 74, 20156 Milano, Italy
| | - Anna Piol
- Direzione Medica di Presidio, Azienda Ospedaliera-Polo Universitario Luigi Sacco, Via G.B. Grassi 74, 20156 Milano, Italy
| | - Matteo Rimoldi
- Direzione Medica di Presidio, Azienda Ospedaliera-Polo Universitario Luigi Sacco, Via G.B. Grassi 74, 20156 Milano, Italy
| | - Pietro Olivieri
- Direzione Medica di Presidio, Azienda Ospedaliera-Polo Universitario Luigi Sacco, Via G.B. Grassi 74, 20156 Milano, Italy
| | - Massimo Galli
- Sezione di Malattie Infettive e Immunopatologia, Dipartimento di Scienze Cliniche, Ospedale Luigi Sacco, Università degli Studi di Milano, Via G.B. Grassi 74, 20156 Milano, Italy
| | - Lucia Dolcetti
- Direzione Medica di Presidio, Azienda Ospedaliera-Polo Universitario Luigi Sacco, Via G.B. Grassi 74, 20156 Milano, Italy
| | - Maria R Gismondo
- Laboratorio di Microbiologia Clinica, Virologia e Diagnostica Bioemergenze, Ospedale Luigi Sacco, Università degli Studi di Milano, Via G.B. Grassi 74, 20156 Milano, Italy
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Mooij MJ, Willemsen I, Lobbrecht M, Vandenbroucke-Grauls C, Kluytmans J, Savelkoul PHM. Integron Class 1 Reservoir among Highly Resistant Gram-Negative Microorganisms Recovered at a Dutch Teaching Hospital. Infect Control Hosp Epidemiol 2015; 30:1015-8. [DOI: 10.1086/606039] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Integrons play an important role in the dissemination of resistance genes among bacteria. Nearly 70% of highly resistant gram-negative bacteria isolated at a tertiary care hospital harbored an integron. Epidemiologic analysis suggests that horizontal gene transfer is an important mechanism of resistance spread and has a greater contribution than cross-transmission to levels of resistance in settings where highly resistant gram-negative bacteria are endemic.
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Al-Hazmi HH, Al-Zahrani T, Elmalky AM. Hospital acquired blood stream infection as an adverse outcome for patients admitted to hospital with other principle diagnosis. Saudi J Anaesth 2014; 8:S84-8. [PMID: 25538530 PMCID: PMC4268537 DOI: 10.4103/1658-354x.144084] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Background: Hospital acquired infections (HAI) have emerged as an important public health problem and are a leading cause of morbidity and mortality worldwide. They affect both developed and resource-poor countries and constitute a significant burden both for the patient and for the health care system. Specific objectives in this study are assessment of HAI rate among patients admitted with other principle diagnosis, to identifying the causative agents of hospital acquired infections and to identify some possible risk factors associated with each type of infection, both health related and non-health related. Patients and Methods: The study was done on selected diagnosis groups during year 2010. The infections were found among 250 patients (43.6% males) have been exposed to episodes of infections. Median age of patients was 56. Data were abstracted from the archived patients’ files in medical record department using the annually infection control log-book prepared by the infection control department. The Data collected were demographic information about the patients (age and sex), clinical condition (diagnosis and the length of hospital stay) and possible risk factors for infection as smoking, diabetes mellitus, hypertension and exposure to invasive devices or exposure to surgical procedures. Results: Liver diseases 22.8%, cardiac diseases 22.8%, Gastro-Intestinal System diseases 20%, urinary system diseases 13.6%, and endocrinal disorder 13.6% Prostate gland diseases 7.2%. Episodes of infections caused by 9 types of organisms divided into 47.2% for blood stream infection and 52.8% for other types. 66% acquired blood stream infection were exposed to central venous line. Conclusion: Most common type of HAIs was blood stream infections. Liver, cardiac diseases and gastro-intestinal diseased patients show more proportion of HAIs while urinary system and prostate disease patients show less proportion of HAIs. Gram negative bacilli were the most common organisms found in our study (60%).
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Affiliation(s)
- Hamdan H Al-Hazmi
- Department of Surgery, King Saud University, King Khalid University Hospital, Riyadh, KSA
| | - Tariq Al-Zahrani
- Department of Anesthesia, King Saud University, King Khalid University Hospital, Riyadh, KSA
| | - Ahmed M Elmalky
- Quality Coordinator of Hospital Morbidity and Mortality Review Committee (Clinical Outcome Review and Improvement Committee), King Saud University, King Khalid University Hospital, Riyadh, KSA
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Souverein D, Boers SA, Veenendaal D, Euser SM, Kluytmans J, Den Boer JW. Polyclonal spread and outbreaks with ESBL positive gentamicin resistant Klebsiella spp. in the region Kennemerland, The Netherlands. PLoS One 2014; 9:e101212. [PMID: 24971598 PMCID: PMC4074119 DOI: 10.1371/journal.pone.0101212] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Accepted: 06/04/2014] [Indexed: 11/24/2022] Open
Abstract
Objective The objective of this study was to analyze the transmission dynamics of ESBL positive Klebsiella spp. with an additional resistance towards gentamicin (ESBL-G) in a Dutch region of 650,000 inhabitants in 2012. Methods All patient related ESBL-G isolates isolated in 2012 were genotyped using both Amplification Fragment Length Polymorphism (AFLP) and High-throughput MultiLocus Sequence Typing (HiMLST). HiMLST was used to analyze the presence of (unidentified) clusters of ESBL-G positive patients. Furthermore, all consecutive ESBL-G isolates within patients were studied in order to evaluate the intra-patient variation of antibiotic phenotypes. Results There were 38 ESBL-G isolates, which were classified into 18 different sequence types (STs) and into 21 different AFLP types. Within the STs, four clusters were detected from which two were unknown resulting in a transmission index of 0.27. An analysis of consecutive ESBL-G isolates (with similar STs) within patients showed that for 68.8% of the patients at least one isolate had a different consecutive antibiotic phenotype. Conclusion The transmission of ESBL-G in the region Kennemerland in 2012 was polyclonal with several outbreaks (with a high level of epidemiological linkage). Furthermore, clustering by antibiotic phenotype characterization seems to be an inadequate approach in this setting. The routine practice of molecular typing of collected ESBL-G isolates may help to detect transmission in an early stage, which opens the possibility of a rapid response.
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Affiliation(s)
- Dennis Souverein
- Department of Epidemiology and Infection Prevention, Regional Public Health Laboratory Kennemerland, Haarlem, The Netherlands
- * E-mail:
| | - Stefan A. Boers
- Department of Epidemiology and Infection Prevention, Regional Public Health Laboratory Kennemerland, Haarlem, The Netherlands
| | - Dick Veenendaal
- Department of Epidemiology and Infection Prevention, Regional Public Health Laboratory Kennemerland, Haarlem, The Netherlands
| | - Sjoerd M. Euser
- Department of Epidemiology and Infection Prevention, Regional Public Health Laboratory Kennemerland, Haarlem, The Netherlands
| | - Jan Kluytmans
- Laboratory for Microbiology and Infection Control, Amphia Hospital, Breda, and VU University Medical Center, Amsterdam, The Netherlands
| | - Jeroen W. Den Boer
- Department of Epidemiology and Infection Prevention, Regional Public Health Laboratory Kennemerland, Haarlem, The Netherlands
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Overdevest I, Willemsen I, Rijnsburger M, Eustace A, Xu L, Hawkey P, Heck M, Savelkoul P, Vandenbroucke-Grauls C, van der Zwaluw K, Huijsdens X, Kluytmans J. Extended-spectrum β-lactamase genes of Escherichia coli in chicken meat and humans, The Netherlands. Emerg Infect Dis 2012; 17:1216-22. [PMID: 21762575 PMCID: PMC3381403 DOI: 10.3201/eid1707.110209] [Citation(s) in RCA: 410] [Impact Index Per Article: 34.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
We determined the prevalence and characteristics of extended-spectrum β-lactamase (ESBL) genes of Enterobacteriaceae in retail chicken meat and humans in the Netherlands. Raw meat samples were obtained, and simultaneous cross-sectional surveys of fecal carriage were performed in 4 hospitals in the same area. Human blood cultures from these hospitals that contained ESBL genes were included. A high prevalence of ESBL genes was found in chicken meat (79.8%). Genetic analysis showed that the predominant ESBL genes in chicken meat and human rectal swab specimens were identical. These genes were also frequently found in human blood culture isolates. Typing results of Escherichia coli strains showed a high degree of similarity with strains from meat and humans. These findings suggest that the abundant presence of ESBL genes in the food chain may have a profound effect on future treatment options for a wide range of infections caused by gram-negative bacteria.
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Willemsen I, Elberts S, Verhulst C, Rijnsburger M, Filius M, Savelkoul P, Kluytmans J, Lommerse E, Spanjaard L, Vlaminckx B, Vos A, Wulf M, Vos M, Wintermans R, Andriesse G, van Zeijl J, van der Vorm E, Buiting A, Sturm P, Blok H, Troelstra A, Kaiser A, Vandenbroucke-Grauls C. Highly resistant gram-negative microorganisms: incidence density and occurrence of nosocomial transmission (TRIANGLe Study). Infect Control Hosp Epidemiol 2011; 32:333-41. [PMID: 21460484 DOI: 10.1086/658941] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVES The objectives of this study were to determine the incidence density and the occurrence of horizontal spread of highly resistant gram-negative rods (HR-GNRs) in Dutch hospitals. The factors that influence these outcome measures were also investigated. METHODS All patients with HR-GNRs, as determined by sample testing, who were hospitalized in 1 of 18 hospitals during a 6-month period (April through October 2007) were included in this study. For all available isolates, the species was identified, susceptibility was determined (including the presence of extended-spectrum β-lactamases [ESBLs]), and molecular typing was performed. On the basis of a combination of species identification, molecular typing, and epidemiological data, the occurrence of nosocomial transmission was determined. RESULTS The mean incidence density of patients with HR-GNRs was 55 per 100,000 patient-days (cumulative incidence, 39 per 10,000 patients admitted). A facility being a university hospital was a statistically significant (P = .03) independent determinant of a higher incidence of patients with HR-GNRs. The majority of HR-GNR isolates were ESBL producers. The adjusted transmission index-the ratio between secondary and primary cases-in the participating hospitals ranged from 0.0 to 0.2. The overall adjusted transmission index of HR-GNRs was 0.07. No determinants for a higher transmission index were identified. DISCUSSION The nosocomial transmission rate of HR-GNRs was relatively low in all hospitals where well-established transmission-based precautions were used. The incidence density of patients with HR-GNRs was higher in university hospitals, probably due to the patient population and the complexity of the care provided.
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Affiliation(s)
- I Willemsen
- Department of Medical Microbiology and Infection Control, Amphia Hospital, Breda, The Netherlands.
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Willemsen I, Cooper B, van Buitenen C, Winters M, Andriesse G, Kluytmans J. Improving quinolone use in hospitals by using a bundle of interventions in an interrupted time series analysis. Antimicrob Agents Chemother 2010; 54:3763-9. [PMID: 20585135 PMCID: PMC2934965 DOI: 10.1128/aac.01581-09] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2009] [Revised: 02/28/2010] [Accepted: 06/17/2010] [Indexed: 11/20/2022] Open
Abstract
The objectives of the present study were to determine the effects of multiple targeted interventions on the level of use of quinolones and the observed rates of resistance to quinolones in Escherichia coli isolates from hospitalized patients. A bundle consisting of four interventions to improve the use of quinolones was implemented. The outcome was measured from the monthly levels of use of intravenous (i.v.) and oral quinolones and the susceptibility patterns for E. coli isolates from hospitalized patients. Statistical analyses were performed using segmented regression analysis and segmented Poisson regression models. Before the bundle was implemented, the annual use of quinolones was 2.7 defined daily doses (DDDs)/100 patient days. After the interventions, in 2007, this was reduced to 1.7 DDDs/100 patient days. The first intervention, a switch from i.v. to oral medication, was associated with a stepwise reduction in i.v. quinolone use of 71 prescribed daily doses (PDDs) per month (95% confidence interval [CI] = 47 to 95 PDDs/month, P < 0.001). Intervention 2, introduction of a new antibiotic guideline and education program, was associated with a stepwise reduction in the overall use of quinolones (reduction, 107 PDDs/month [95% CI = 58 to 156 PDDs/month). Before the interventions the quinolone resistance rate was increasing, on average, by 4.6% (95% CI = 2.6 to 6.1%) per year. This increase leveled off, which was associated with intervention 2 and intervention 4, active monitoring of prescriptions and feedback. Trends in resistance to other antimicrobial agents did not change. This study showed that the hospital-wide use of quinolones can be significantly reduced by an active policy consisting of multiple interventions. There was also a stepwise reduction in the rate of quinolone resistance associated with the bundle of interventions.
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Affiliation(s)
- Ina Willemsen
- Department of Medical Microbiology and Infection Control, Amphia Hospital, Breda, The Netherlands.
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Cohn LA, Middleton JR. A veterinary perspective on methicillin-resistant staphylococci. J Vet Emerg Crit Care (San Antonio) 2010; 20:31-45. [PMID: 20230433 DOI: 10.1111/j.1476-4431.2009.00497.x] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To familiarize the reader with the epidemiology, diagnosis, and infectious and zoonotic potential of methicillin-resistant staphylococci. DATA SOURCES Original research publications, scientific reviews and abstracts, case reports, and conference proceedings. HUMAN DATA SYNTHESIS Staphylococcus aureus is a common human commensal organism; acquisition of genes encoding an altered penicillin-binding protein confers resistance to beta-lactam antimicrobial drugs. Methicillin-resistant S. aureus (MRSA) are often resistant to non-beta-lactam antimicrobial drugs as well. Originally described as an important cause of nosocomial infection, MRSA colonization and infection are now often identified in humans outside healthcare settings. Like other S. aureus, MRSA may be present without clinical illness. However, when they do cause infection the consequences can be extremely serious. VETERINARY DATA SYNTHESIS The major domestic animal species, including pets and livestock, may become contaminated, colonized, or infected with methicillin-resistant staphylococci, including MRSA. Dogs and cats are more likely to be colonized/infected with Staphylococcus pseudintermedius than S. aureus, but this pathogen can acquire genes encoding methicillin resistance (ie, MRSP). Diagnosis of MRSA or MRSP has implications not only for treatment of infected animals, but for potential zoonotic transmission. CONCLUSIONS MRSA infection is an important cause of morbidity and mortality in humans. Animals may be contaminated, colonized, or infected with MRSA, with implications for the animal's health and as a potential reservoir for human infection. Staphylococci other than S. aureus may also acquire genes for methicillin resistance, and these species can also result in animal and occasionally human morbidity or mortality.
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Affiliation(s)
- Leah A Cohn
- Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211, USA.
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