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Developing an evidence-based intervention for consumers to reduce the risk of multiple antimicrobial resistance transmission pathways

English title Developing an evidence-based intervention for consumers to reduce the risk of multiple antimicrobial resistance transmission pathways
Applicant Visschers Vivianne
Number 177456
Funding scheme NRP 72 Antimicrobial Resistance
Research institution Hochschule für Angewandte Psychologie Fachhochschule Nordwestschweiz
Institution of higher education University of Applied Sciences and Arts Northwestern Switzerland (without UTE) - FHNW
Main discipline Applied psychology
Start/End 01.03.2018 - 31.10.2021
Approved amount 302'815.00
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All Disciplines (4)

Applied psychology
Health Education
Molecular Biology
Methods of Epidemiology and Preventive Medicine

Keywords (5)

consumer behaviour; exposure pathways; intervention; risk management; stakeholder perception

Lay Summary (German)

Wir erforschen die Übertragungswege von Antibiotikaresistenzen rundum dem Lebensmittelkonsum für die Schweiz. Zudem untersuchen wir mittels welcher Interventionsansätze Konsumenten und Konsumentinnen dazu gefördert werden können, ihre Aussetzung an gefährlichen Übertragungswegen zu reduzieren.
Lay summary
Um eine wirksame Intervention zur Risikominderung antimikrobiell-resistenter Bakterien beim Lebensmittelkonsum für Schweizer Konsumenten und Konsumentinnen zu entwickeln, erstellen wir zuerst eine Risikokarte mit den Übertragungswegen antimikrobiell-resistenter Bakterien in der Lebensmittelkette. Zweitens untersuchen wir in einer Interviewstudie die Wahrnehmungen dieser Übertragungswege bei Konsumenten und Konsumentinnen, Veterinärärzten und –Ärztinnen und Landwirten und Landwirtinnen. Die Wahrnehmungen werden mit der Risikokarte verglichen um festzulegen, welche Übertragungswege mittels einer Intervention bei Konsumenten und Konsumentinnen angegangen werden sollen. Drittens wird die Effektivität verschiedener Interventionsansätze auf das Konsumverhalten erforscht.
Direct link to Lay Summary Last update: 17.01.2018

Responsible applicant and co-applicants


Project partner


Group / person Country
Types of collaboration
Various organizations Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure
EFFORT Belgium (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure
Agroscope Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
Kolloquium der Hochschule für Angewandte Psychologie FHNW Individual talk Intervention zur Risikoreduktion der multiplen antimikrobiellen Übertragungswege 15.01.2020 Olten, Switzerland Freivogel Claudia; Visschers Vivianne;
Forschungskolloquium des Lehrstuhls Angewandte Sozial- und Gesundheitspsychologie, Universität Zürich Individual talk Massgeschneiderte Intervention zur Reduktion des Übertragungsrisikos von antibiotikaresistenten Bakterien 04.12.2019 Zürich, Switzerland Freivogel Claudia; Visschers Vivianne;
14. Kongress der Fachgruppe Gesundheitspsychologie der Deutsche Gesellschaft für Psychologie Talk given at a conference Lebensmittel als mögliche Infektionsquelle von Antibiotikaresistenzen: Prädiktoren von präventivem Verhalten 25.09.2019 Greifswald, Germany Visschers Vivianne; Freivogel Claudia;
Conference of the European Health Psychology Society (EHPS) Poster Reducing the transmission risk of antimicrobial resistant germs: Swiss peoples` awareness of exposure pathways. 03.09.2019 Dubrovnik, Croatia Freivogel Claudia; Lechner Isabel; Visschers Vivianne;
ECVPH Annual General Meeting & Annual Scientific Conference 2018 Poster Exposure of the Swiss Population to Antimicrobial Hazards 17.10.2018 Perugia, Italy Lechner Isabel;

Knowledge transfer events


Title Date Place
2. Begleitgruppentreffen des Forschungsprojektes "Intervention zur Risikoreduktion der multiplen antimikrobiellen Übertragungswege" 12.12.2019 Berne, Switzerland
Begleitgruppentreffen des Forschungsprojektes "Intervention zur Risikoreduktion der multiplen antimikrobiellen Übertragungswege" 13.12.2018 Bern, Switzerland


Bacteria can become resistant to antimicrobials (AM) by several mechanisms of resistance transfer and can survive in very diverse environments. The resulting exposure system is therefore highly complex. Accordingly, linkages between different compartments within which antimicrobial resistant (AMR) bacteria can be observed, are diverse and currently not well understood. Consumers and their behaviours seem to play a central role in the spread of AMR bacteria, e.g. through their food preparation practices, animal contact and antibiotic intake. An understanding of AMR exposure pathways is essential to develop effective interventions to reduce the risks of resistance exposure. Evidence-based interventions aimed at risk mitigation of AMR among consumers or patients are rare, let alone at reducing AMR exposure in household settings. The aim of this interdisciplinary project is therefore to help set priorities for risk management to reduce AMR exposure in both human and livestock populations and to provide recommendations for risk management and intervention strategies to praxis stakeholders. We therefore intend to investigate: 1) the relative importance of the transmission pathways of resistance in Switzerland; 2) the perceptions and decision making of different stakeholder groups; and 3) intervention strategies that effectively increase the uptake of measures that prevent AMR exposure among consumers. We will thereby focus on the human-animal interface because little is known about this area and consumers are able - but seem to do little - to reduce their AMR exposure through direct and indirect animal contact.Our project includes four tasks. In Task 1, we will make an inventory of all exposure pathways into and within Switzerland, and rank them on their relative importance. This expert model will be the result of desk-work and interviews with experts. In Task 2, we will conduct semi-structured interviews to reveal the perceptions of various stakeholders (i.e. veterinarians, farmers and laypeople) on exposure pathways of resistance. Possible preventive measures and intervention strategies are identified in Task 3 by means of a gap analysis in which the expert model of Task 1 is compared to the mental models of Task 2. Last but not least, in Task 4, intervention materials are developed and tested in a parallel randomized-control trial. The effect of tailored messages are compared to that of a brochure on the uptake of preventive measures among consumers.The proposed research project will thus provide evidence-based recommendations for intervention strategies to reduce the risks of AMR among consumers as well as a risk exposure pathway mapping to be used in risk management. Our interdisciplinary approach, including risk assessment, epidemiology, microbiology and psychology, is most likely to result in a significant reduction of the risk of AMR exposure.