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Gebel J, Rausch M, Bienentreu K, Droop F, Eggers M, Gebel L, Gemein S, Hornei B, Ilschner C, Jacobshagen A, Kampf G, Papan C, Roesch K, Schmitz L, Suchomel M, Vossebein L, Mutters NT, Exner M. Evaluation of a microscale quantitative suspension test to determine the bactericidal and yeasticidal activity of glutaral - one step to improve sustainability in disinfectant testing. GMS Hyg Infect Control 2024; 19:Doc03. [PMID: 38404411 PMCID: PMC10884837 DOI: 10.3205/dgkh000458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
Aims To evaluate a newly developed microscale quantitative suspension test compared to the existing standard suspension test using determination of the bactericidal and yeasticidal activity of glutaral as one step to improve the sustainability of disinfectant testing. Methods The testing principles of the quantitative suspension test according to VAH method 9 (comparable to EN 13727) was used as a standard suspension test using 8.0 mL product test solution, 1.0 mL organic load and 1.0 mL test suspension. In addition, a micro-scale suspension test was performed in 96-well plates with 160 µL product test solution, 20 µL organic load and 20 µL test suspension. S. aureus ATCC 6538, P. aeruginosa ATCC 15442 and C. albicans ATCC 10231 were test organisms. Glutaral was tested at concentrations of 0.05%, 0.1%, 0.2% and 0.3% with exposure times of 1, 5 and 15 min. Polysorbate 80 (30 g/L), lecithin (9 g/L), L-histidine (1 g/L) and glycine (10 g/L) were used as validated neutralizers. After serial dilution of the disinfectant-neutralizer-mixture, plates were incubated for 48 h at 36°C (bacteria) or 72 hours at 30°C (C. albicans) and colony forming units (cfu) counted. The lg reduction was calculated as the difference between the results of the water control and the disinfectant at the end of the exposure time. All experiments were done in triplicate under clean conditions. Means of lg reduction were compared with the unpaired t-test, p<0.05 was considered to be significant. Results Sufficient bactericidal activity according the VAH test requirements of at least 5 lg was found with both methods in 16 data sets of 24 data sets in total, and insufficient bactericidal activity of less than 5 lg was found with both methods in 7 data sets. In one data set, the mean lg reduction was above 5 lg with the microscale method and <5 lg with the VAH method, with no significant difference between the data sets (p=0.3096; 0.2% glutaral, 1 min, P. aeruginosa). A sufficient yeasticidal activity of at least 4 lg was found with both methods in one data set, an insufficient yeasticidal activity of less than 4 lg was found with both methods in 8 data sets. With one exception, no significant differences were detected between the two methods below the efficacy threshold. Conclusions The microscale quantitative suspension test proved to provide results similar to those of VAH method 9 when the bactericidal and yeasticidal activity of glutaralwas evaluated, with 32 out of 33 evaluations yielding consistent results in terms of efficacy. Its suitability should be confirmed with additional bacterial species, additional biocidal active substances and in other laboratories.
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Affiliation(s)
- Jürgen Gebel
- Institute for Hygiene and Public Health, University Clinics Bonn, Bonn, Germany
- VAH – Association for Applied Hygiene c/o Institute for Hygiene and Public Health, Bonn, Germany
| | - Marvin Rausch
- Institute for Hygiene and Public Health, University Clinics Bonn, Bonn, Germany
- VAH – Association for Applied Hygiene c/o Institute for Hygiene and Public Health, Bonn, Germany
| | - Katja Bienentreu
- Institute for Hygiene and Public Health, University Clinics Bonn, Bonn, Germany
- VAH – Association for Applied Hygiene c/o Institute for Hygiene and Public Health, Bonn, Germany
| | - Felix Droop
- Institute for Hygiene and Public Health, University Clinics Bonn, Bonn, Germany
| | - Maren Eggers
- VAH – Association for Applied Hygiene c/o Institute for Hygiene and Public Health, Bonn, Germany
- Laboratory Prof. Gisela Enders MVZ GbR, Stuttgart, Germany
| | - Lea Gebel
- Institute for Hygiene and Public Health, University Clinics Bonn, Bonn, Germany
| | | | - Britt Hornei
- VAH – Association for Applied Hygiene c/o Institute for Hygiene and Public Health, Bonn, Germany
- Evangelisches Krankenhaus Oberhausen, Zentralbereich Krankenhaushygiene, Institut für Laboratoriumsmedizin und Klinische Mikrobiologie, Oberhausen
| | - Carola Ilschner
- Institute for Hygiene and Public Health, University Clinics Bonn, Bonn, Germany
- VAH – Association for Applied Hygiene c/o Institute for Hygiene and Public Health, Bonn, Germany
| | - Anja Jacobshagen
- VAH – Association for Applied Hygiene c/o Institute for Hygiene and Public Health, Bonn, Germany
- Federal Institute of Drugs and Medical Devices (BfArM) – Medical Devices Division, Bonn, Germany
| | - Günter Kampf
- University Medicine Greifswald, Greifswald, Germany
| | - Cihan Papan
- Institute for Hygiene and Public Health, University Clinics Bonn, Bonn, Germany
| | - Kira Roesch
- Institute for Hygiene and Public Health, University Clinics Bonn, Bonn, Germany
- VAH – Association for Applied Hygiene c/o Institute for Hygiene and Public Health, Bonn, Germany
| | - Luisa Schmitz
- Institute for Hygiene and Public Health, University Clinics Bonn, Bonn, Germany
| | - Miranda Suchomel
- VAH – Association for Applied Hygiene c/o Institute for Hygiene and Public Health, Bonn, Germany
- Institute for Hygiene and Applied Immunology, Medical University Vienna, Medical-technical Hygiene, Vienna, Austria
| | - Lutz Vossebein
- VAH – Association for Applied Hygiene c/o Institute for Hygiene and Public Health, Bonn, Germany
- Hochschule Niederrhein – Fachbereich Textil- und Bekleidungstechnik, Mönchengladbach, Germany
| | - Nico T. Mutters
- Institute for Hygiene and Public Health, University Clinics Bonn, Bonn, Germany
| | - Martin Exner
- Institute for Hygiene and Public Health, University Clinics Bonn, Bonn, Germany
- VAH – Association for Applied Hygiene c/o Institute for Hygiene and Public Health, Bonn, Germany
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Eggers M, Exner M, Gebel J, Ilschner C, Rabenau HF, Schwebke I. Hygiene and disinfection measures for monkeypox virus infections. GMS Hyg Infect Control 2022; 17:Doc18. [PMID: 36531784 PMCID: PMC9727782 DOI: 10.3205/dgkh000421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
In Germany, recommendations on infection prevention and control of current virus outbreaks are given as communications by the Association for Applied Hygiene e.V. (VAH) together with the joint Disinfectant Commission of the German Association for the Control of Virus Diseases e.V. (DVV) and the Society of Virology* (GfV). The DVV was founded in 1954 in response to the ongoing threat to the population from polio and was given its current name in 1977. The DVV is supported by the Federal Ministry of Health, the Ministries of Health of the Federal States, scientific societies, as well as social foundations and organisations. Private individuals cannot be members of the DVV. The Society of Virology e.V. (GfV) is a scientific society for all virological fields in Germany, Austria and Switzerland, and is thus the largest virological society in Europe. With numerous commissions, guidelines and statements, it is the authoritative contact for research, healthcare and politics. The joint commission "Virus Disinfection" of these scientific societies focuses on the efficacy of chemical disinfection procedures against viruses. The VAH bundles the expertise of scientific societies and experts on infection prevention and is particularly committed to the quality assurance of hygiene measures. With the VAH disinfectant list, the association provides the standard reference for the selection of high-quality disinfection procedures. This disinfectant list has a tradition of more than 60 years in Germany. The original German version of this document was published in August 2022 and has now been made available to the international professional public in English. The document contains recommendations on hygiene and disinfection measures for monkeypox virus infections. Disinfectants against monkeypox must have at least proven efficacy against enveloped viruses (active against enveloped viruses); products with the efficacy ranges "limited virucidal activity" and "virucidal" can also be used. The disinfectant list of the VAH or the disinfectant list of the Robert Koch Institute are available for the selection of products. Especially in the case of contamination with crust or scab material, it should be noted that protein contamination can have a protective or stabilising effect on monkeypox. Therefore, cleaning - before disinfection - should always be carried out in this situation. Preventive measures such as vaccination and hygiene in the vicinity of people with monkeypox must be taken to prevent transmission to small children, pregnant women or people with a pronounced immune deficiency.
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Affiliation(s)
- Maren Eggers
- Association for Applied Hygiene e.V. (VAH), Bonn, Germany,Society of Virology (GfV), Heidelberg, Germany,Disinfectant Commission of the German Association for the Control of Virus Diseases e.V. (DVV), Kiel, Germany,Labor Prof. Gisela Enders MVZ GbR, Stuttgart, Germany,*To whom correspondence should be addressed: Maren Eggers, Labor Prof. Gisela Enders MVZ GbR, Head of VirologyRosenbergstr. 85, 70193, Stuttgart, Germany, E-mail:
| | - Martin Exner
- Association for Applied Hygiene e.V. (VAH), Bonn, Germany,German Society of Hospital Hygiene (DGKH), Berlin, Germany,University Hospital Bonn, Bonn, Germany
| | - Jürgen Gebel
- Association for Applied Hygiene e.V. (VAH), Bonn, Germany,University Hospital Bonn, Bonn, Germany
| | - Carola Ilschner
- Association for Applied Hygiene e.V. (VAH), Bonn, Germany,University Hospital Bonn, Bonn, Germany
| | - Holger F. Rabenau
- Society of Virology (GfV), Heidelberg, Germany,Disinfectant Commission of the German Association for the Control of Virus Diseases e.V. (DVV), Kiel, Germany,University Hospital Frankfurt, Germany
| | - Ingeborg Schwebke
- Society of Virology (GfV), Heidelberg, Germany,Disinfectant Commission of the German Association for the Control of Virus Diseases e.V. (DVV), Kiel, Germany
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Exner M, Bhattacharya S, Gebel J, Goroncy-Bermes P, Hartemann P, Heeg P, Ilschner C, Kramer A, Ling ML, Merkens W, Oltmanns P, Pitten F, Rotter M, Schmithausen RM, Sonntag HG, Steinhauer K, Trautmann M. Reply to the letter to the editor by R. Papke. GMS Hyg Infect Control 2021; 16:Doc23. [PMID: 34354902 PMCID: PMC8299058 DOI: 10.3205/dgkh000394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Martin Exner
- Institute of Hygiene and Public Health, Bonn University, Bonn, Germany
| | | | - Jürgen Gebel
- Institute of Hygiene and Public Health, Bonn University, Bonn, Germany
| | | | - Philippe Hartemann
- Departement Environnement et Santé Publique S.E.R.E.S., Faculté de Médecine, Nancy, France
| | - Peter Heeg
- Institute of Medical Microbiology and Hygiene, University of Tübingen, Germany
| | - Carola Ilschner
- Institute of Hygiene and Public Health, Bonn University, Bonn, Germany
| | - Axel Kramer
- Institute of Hygiene and Environmental Medicine, University Medicine Greifswald, Germany
| | - Moi Lin Ling
- Infection Prevention & Control, Singapore General Hospital, Singapore
| | | | | | - Frank Pitten
- IKI - Institut für Krankenhaushygiene & Infektionskontrolle GmbH, Gießen, Germany
| | | | | | - Hans-Günther Sonntag
- Institute of Hygiene and Medical Microbiology, University of Heidelberg, Germany
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Exner M, Bhattacharya S, Gebel J, Goroncy-Bermes P, Hartemann P, Heeg P, Ilschner C, Kramer A, Ling ML, Merkens W, Oltmanns P, Pitten F, Rotter M, Schmithausen RM, Sonntag HG, Steinhauer K, Trautmann M. Chemical disinfection in healthcare settings: critical aspects for the development of global strategies. GMS Hyg Infect Control 2020; 15:Doc36. [PMID: 33520601 PMCID: PMC7818848 DOI: 10.3205/dgkh000371] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Chemical disinfection is an indispensable means of preventing infection. This holds true for healthcare settings, but also for all other settings where transmission of pathogens poses a potential health risk to humans and/or animals. Research on how to ensure effectiveness of disinfectants and the process of disinfection, as well as on when, how and where to implement disinfection precautions is an ongoing challenge requiring an interdisciplinary team effort. The valuable resources of active substances used for disinfection must be used wisely and their interaction with the target organisms and the environment should be evaluated and monitored closely, if we are to reliable reap the benefits of disinfection in future generations. In view of the global threat of communicable diseases and emerging and re-emerging pathogens and multidrug-resistant pathogens, the relevance of chemical disinfection is continually increasing. Although this consensus paper pinpoints crucial aspects for strategies of chemical disinfection in terms of the properties of disinfectant agents and disinfection practices in a particularly vulnerable group and setting, i.e., patients in healthcare settings, it takes a comprehensive, holistic approach to do justice to the complexity of the topic of disinfection.
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Affiliation(s)
- Martin Exner
- Institute of Hygiene and Public Health, Bonn University, Bonn, Germany
| | | | - Jürgen Gebel
- Institute of Hygiene and Public Health, Bonn University, Bonn, Germany
| | | | - Philippe Hartemann
- Departement Environnement et Santé Publique S.E.R.E.S., Faculté de Médecine, Nancy, France
| | - Peter Heeg
- Institute of Medical Microbiology and Hygiene, University of Tübingen, Germany
| | - Carola Ilschner
- Institute of Hygiene and Public Health, Bonn University, Bonn, Germany
| | - Axel Kramer
- Institute of Hygiene and Environmental Medicine, University Medicine Greifswald, Germany
| | - Moi Lin Ling
- Infection Prevention & Control, Singapore General Hospital, Singapore
| | | | | | - Frank Pitten
- IKI – Institut für Krankenhaushygiene & Infektionskontrolle GmbH, Gießen, Germany
| | | | | | - Hans-Günther Sonntag
- Institute of Hygiene and Medical Microbiology, University of Heidelberg, Germany
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Exner M, Bhattacharya S, Christiansen B, Gebel J, Goroncy-Bermes P, Hartemann P, Heeg P, Ilschner C, Kramer A, Larson E, Merkens W, Mielke M, Oltmanns P, Ross B, Rotter M, Schmithausen RM, Sonntag HG, Trautmann M. Antibiotic resistance: What is so special about multidrug-resistant Gram-negative bacteria? GMS Hyg Infect Control 2017; 12:Doc05. [PMID: 28451516 PMCID: PMC5388835 DOI: 10.3205/dgkh000290] [Citation(s) in RCA: 112] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In the past years infections caused by multidrug-resistant Gram-negative bacteria have dramatically increased in all parts of the world. This consensus paper is based on presentations, subsequent discussions and an appraisal of current literature by a panel of international experts invited by the Rudolf Schülke Stiftung, Hamburg. It deals with the epidemiology and the inherent properties of Gram-negative bacteria, elucidating the patterns of the spread of antibiotic resistance, highlighting reservoirs as well as transmission pathways and risk factors for infection, mortality, treatment and prevention options as well as the consequences of their prevalence in livestock. Following a global, One Health approach and based on the evaluation of the existing knowledge about these pathogens, this paper gives recommendations for prevention and infection control measures as well as proposals for various target groups to tackle the threats posed by Gram-negative bacteria and prevent the spread and emergence of new antibiotic resistances.
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Affiliation(s)
- Martin Exner
- Institute of Hygiene and Public Health, Bonn University, Bonn, Germany
| | | | - Bärbel Christiansen
- Department of Internal Hygiene, Schleswig-Holstein University Hospital, Kiel, Germany
| | - Jürgen Gebel
- Institute of Hygiene and Public Health, Bonn University, Bonn, Germany
| | | | - Philippe Hartemann
- Departement Environnement et Santé Publique S.E.R.E.S., Faculté de Médecine, Nancy, France
| | - Peter Heeg
- Institute of Medical Microbiology and Hygiene, University of Tübingen, Germany
| | - Carola Ilschner
- Institute of Hygiene and Public Health, Bonn University, Bonn, Germany
| | - Axel Kramer
- Institute of Hygiene and Environmental Medicine, University Medicine Greifswald, Germany
| | - Elaine Larson
- School of Nursing, Columbia University, New York, USA.,Mailman School of Public Health, Columbia University, New York, USA
| | | | | | | | - Birgit Ross
- Hospital Hygiene, Essen University Hospital, Essen, Germany
| | | | | | - Hans-Günther Sonntag
- Institute of Hygiene and Medical Microbiology, University of Heidelberg, Germany
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Bloomfield S, Exner M, Flemming HC, Goroncy-Bermes P, Hartemann P, Heeg P, Ilschner C, Krämer I, Merkens W, Oltmanns P, Rotter M, Rutala WA, Sonntag HG, Trautmann M. Lesser-known or hidden reservoirs of infection and implications for adequate prevention strategies: Where to look and what to look for. GMS Hyg Infect Control 2015; 10:Doc04. [PMID: 25699227 PMCID: PMC4332272 DOI: 10.3205/dgkh000247] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In developing hygiene strategies, in recent years, the major focus has been on the hands as the key route of infection transmission. However, there is a multitude of lesser-known and underestimated reservoirs for microorganisms which are the triggering sources and vehicles for outbreaks or sporadic cases of infection. Among those are water reservoirs such as sink drains, fixtures, decorative water fountains and waste-water treatment plants, frequently touched textile surfaces such as private curtains in hospitals and laundry, but also transvaginal ultrasound probes, parenteral drug products, and disinfectant wipe dispensers. The review of outbreak reports also reveals Gram-negative and multiple-drug resistant microorganisms to have become an increasingly frequent and severe threat in medical settings. In some instances, the causative organisms are particularly difficult to identify because they are concealed in biofilms or in a state referred to as viable but nonculturable, which eludes conventional culture media-based detection methods. There is an enormous preventative potential in these insights, which has not been fully tapped. New and emerging pathogens, novel pathogen detection methods, and hidden reservoirs of infection should hence be given special consideration when designing the layout of buildings and medical devices, but also when defining the core competencies for medical staff, establishing programmes for patient empowerment and education of the general public, and when implementing protocols for the prevention and control of infections in medical, community and domestic settings.
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Affiliation(s)
- Sally Bloomfield
- London School of Hygiene and Tropical Medicine, International Scientific Forum on Home Hygiene, London, UK
| | - Martin Exner
- Institute of Hygiene and Public Health, Bonn University, Bonn, Germany
| | | | | | - Philippe Hartemann
- Departement Environment et Santé Publique S.E.R.E.S., Faculté de Médicine, Nancy, France
| | - Peter Heeg
- Institute of Medical Microbiology and Hygiene, Tübingen, Germany
| | - Carola Ilschner
- Institute of Hygiene and Public Health, Bonn University, Bonn, Germany
| | - Irene Krämer
- Pharmacy Department of Mainz University, Mainz, Germany
| | | | | | | | | | | | - Matthias Trautmann
- Department of Hospital Hygiene at Stuttgart Hospital, Stuttgart, Germany
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Teichert-Barthel U, Hornbach-Beckers S, Ilschner C, Hornei B, Gebel J, Exner M. Händewaschen - na, klar! Eine Mitmachaktion des Gesundheits- und Jugendamts im Landkreis Ahrweiler in Zusammenarbeit mit dem Institut für Hygiene und Öffentliche Gesundheit der Universität Bonn. Gesundheitswesen 2005. [DOI: 10.1055/s-2005-865584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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