How can patients and their physicians contribute to an outbreak investigation? Experiences from a nationwide listeriosis outbreak in Switzerland

QUESTIONS UNDER STUDY/PRINCIPLES: Gathering patient information to contain an outbreak of Listeria monocytogenes is difficult because of the patients’ severe illness or death. Extending the range of interviewees to acquire epidemiological data can thus be important to maximise information....

Full description

Bibliographic Details
Main Authors: Sabine Kiefer, Kerstin Kling, Roger Stephan, Martin W. Bratschi, Marianne Jost, Philipp Justus Bless, Claudia Schmutz, Daniel Mäusezahl, Kaspar Wyss, Mirjam Mäusezahl-Feuz, Christoph Hatz
Format: Article
Language:English
Published: SMW supporting association (Trägerverein Swiss Medical Weekly SMW) 2016-11-01
Series:Swiss Medical Weekly
Subjects:
Online Access:https://www.smw.ch/index.php/smw/article/view/2244
_version_ 1798003779706028032
author Sabine Kiefer
Kerstin Kling
Roger Stephan
Martin W. Bratschi
Marianne Jost
Philipp Justus Bless
Claudia Schmutz
Daniel Mäusezahl
Kaspar Wyss
Mirjam Mäusezahl-Feuz
Christoph Hatz
author_facet Sabine Kiefer
Kerstin Kling
Roger Stephan
Martin W. Bratschi
Marianne Jost
Philipp Justus Bless
Claudia Schmutz
Daniel Mäusezahl
Kaspar Wyss
Mirjam Mäusezahl-Feuz
Christoph Hatz
author_sort Sabine Kiefer
collection DOAJ
description QUESTIONS UNDER STUDY/PRINCIPLES: Gathering patient information to contain an outbreak of Listeria monocytogenes is difficult because of the patients’ severe illness or death. Extending the range of interviewees to acquire epidemiological data can thus be important to maximise information. METHODS: We built the current analysis on a case-case outbreak investigation conducted during a Swiss listeriosis outbreak between 30 January and 11 May 2014, including 31 patients with confirmed L. monocytogenes infection. We interviewed treating physicians and patients or their next of kin to gather information on clinical aspects, eating habits and food consumption. We compared the different information sources with regards to their potential to provide specific, complete and rapid information on the affected population and their food consumption history. RESULTS: We obtained a 100% response rate among physicians, providing detailed information on the affected population by describing health status, underlying conditions, and signs and symptoms. Detailed information on food history could not be obtained from physicians, making the information vague and unspecific. Less than 50% of patients could be interviewed, limiting our information base. Nevertheless, patient information on the food history was sufficiently detailed and helped to identify the outbreak source. CONCLUSIONS: outbreak investigation teams confronted with limited information from patients and with small numbers of cases can enhance information on the affected population and the outbreak source by combining information from physicians and patients. Physicians provided comprehensive information on signs and symptoms, underlying conditions and the general health status. Patients remain vital to provide detailed information on the food consumption history.
first_indexed 2024-04-11T12:13:18Z
format Article
id doaj.art-cb3548f5b6b44ae885ebcc4dc98ff157
institution Directory Open Access Journal
issn 1424-3997
language English
last_indexed 2024-04-11T12:13:18Z
publishDate 2016-11-01
publisher SMW supporting association (Trägerverein Swiss Medical Weekly SMW)
record_format Article
series Swiss Medical Weekly
spelling doaj.art-cb3548f5b6b44ae885ebcc4dc98ff1572022-12-22T04:24:32ZengSMW supporting association (Trägerverein Swiss Medical Weekly SMW)Swiss Medical Weekly1424-39972016-11-01146454610.4414/smw.2016.14366How can patients and their physicians contribute to an outbreak investigation? Experiences from a nationwide listeriosis outbreak in SwitzerlandSabine KieferKerstin KlingRoger StephanMartin W. BratschiMarianne JostPhilipp Justus BlessClaudia SchmutzDaniel MäusezahlKaspar WyssMirjam Mäusezahl-FeuzChristoph Hatz QUESTIONS UNDER STUDY/PRINCIPLES: Gathering patient information to contain an outbreak of Listeria monocytogenes is difficult because of the patients’ severe illness or death. Extending the range of interviewees to acquire epidemiological data can thus be important to maximise information. METHODS: We built the current analysis on a case-case outbreak investigation conducted during a Swiss listeriosis outbreak between 30 January and 11 May 2014, including 31 patients with confirmed L. monocytogenes infection. We interviewed treating physicians and patients or their next of kin to gather information on clinical aspects, eating habits and food consumption. We compared the different information sources with regards to their potential to provide specific, complete and rapid information on the affected population and their food consumption history. RESULTS: We obtained a 100% response rate among physicians, providing detailed information on the affected population by describing health status, underlying conditions, and signs and symptoms. Detailed information on food history could not be obtained from physicians, making the information vague and unspecific. Less than 50% of patients could be interviewed, limiting our information base. Nevertheless, patient information on the food history was sufficiently detailed and helped to identify the outbreak source. CONCLUSIONS: outbreak investigation teams confronted with limited information from patients and with small numbers of cases can enhance information on the affected population and the outbreak source by combining information from physicians and patients. Physicians provided comprehensive information on signs and symptoms, underlying conditions and the general health status. Patients remain vital to provide detailed information on the food consumption history. https://www.smw.ch/index.php/smw/article/view/2244foodborne pathogensinformationinterviewsListeria monocytogeneslisteriosisoutbreak investigation
spellingShingle Sabine Kiefer
Kerstin Kling
Roger Stephan
Martin W. Bratschi
Marianne Jost
Philipp Justus Bless
Claudia Schmutz
Daniel Mäusezahl
Kaspar Wyss
Mirjam Mäusezahl-Feuz
Christoph Hatz
How can patients and their physicians contribute to an outbreak investigation? Experiences from a nationwide listeriosis outbreak in Switzerland
Swiss Medical Weekly
foodborne pathogens
information
interviews
Listeria monocytogenes
listeriosis
outbreak investigation
title How can patients and their physicians contribute to an outbreak investigation? Experiences from a nationwide listeriosis outbreak in Switzerland
title_full How can patients and their physicians contribute to an outbreak investigation? Experiences from a nationwide listeriosis outbreak in Switzerland
title_fullStr How can patients and their physicians contribute to an outbreak investigation? Experiences from a nationwide listeriosis outbreak in Switzerland
title_full_unstemmed How can patients and their physicians contribute to an outbreak investigation? Experiences from a nationwide listeriosis outbreak in Switzerland
title_short How can patients and their physicians contribute to an outbreak investigation? Experiences from a nationwide listeriosis outbreak in Switzerland
title_sort how can patients and their physicians contribute to an outbreak investigation experiences from a nationwide listeriosis outbreak in switzerland
topic foodborne pathogens
information
interviews
Listeria monocytogenes
listeriosis
outbreak investigation
url https://www.smw.ch/index.php/smw/article/view/2244
work_keys_str_mv AT sabinekiefer howcanpatientsandtheirphysicianscontributetoanoutbreakinvestigationexperiencesfromanationwidelisteriosisoutbreakinswitzerland
AT kerstinkling howcanpatientsandtheirphysicianscontributetoanoutbreakinvestigationexperiencesfromanationwidelisteriosisoutbreakinswitzerland
AT rogerstephan howcanpatientsandtheirphysicianscontributetoanoutbreakinvestigationexperiencesfromanationwidelisteriosisoutbreakinswitzerland
AT martinwbratschi howcanpatientsandtheirphysicianscontributetoanoutbreakinvestigationexperiencesfromanationwidelisteriosisoutbreakinswitzerland
AT mariannejost howcanpatientsandtheirphysicianscontributetoanoutbreakinvestigationexperiencesfromanationwidelisteriosisoutbreakinswitzerland
AT philippjustusbless howcanpatientsandtheirphysicianscontributetoanoutbreakinvestigationexperiencesfromanationwidelisteriosisoutbreakinswitzerland
AT claudiaschmutz howcanpatientsandtheirphysicianscontributetoanoutbreakinvestigationexperiencesfromanationwidelisteriosisoutbreakinswitzerland
AT danielmausezahl howcanpatientsandtheirphysicianscontributetoanoutbreakinvestigationexperiencesfromanationwidelisteriosisoutbreakinswitzerland
AT kasparwyss howcanpatientsandtheirphysicianscontributetoanoutbreakinvestigationexperiencesfromanationwidelisteriosisoutbreakinswitzerland
AT mirjammausezahlfeuz howcanpatientsandtheirphysicianscontributetoanoutbreakinvestigationexperiencesfromanationwidelisteriosisoutbreakinswitzerland
AT christophhatz howcanpatientsandtheirphysicianscontributetoanoutbreakinvestigationexperiencesfromanationwidelisteriosisoutbreakinswitzerland