Evidence map›Paper›PMID 27640674›Full record

ArticleInfection control and hospital epidemiology2016

Energy Conservation and the Promotion of Legionella pneumophila Growth: The Probable Role of Heat Exchangers in a Nosocomial Outbreak.

Emilie Bédard, Simon Lévesque, Philippe Martin, Linda Pinsonneault, Kiran Paranjape, Cindy Lalancette, Charles-Éric Dolcé, Manuela Villion, Louis Valiquette, Sébastien P Faucher and 1 more

Open access · hybridAbstract read
In one paragraph

Article in Infection control and hospital epidemiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
2.0field-weighted citation impact, top 14% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 26 citations in OpenAlex.

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  13. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 4 institutions in 1 country.

Emilie Bédard1Department of Civil Engineering,Polytechnique Montréal,Montréal,Canada.
Simon Lévesque2Laboratoire de Santé Publique du Québec/ Institut National de Santé Publique du Québec,Sainte-Anne-de-Bellevue,Canada.
Philippe Martin3Department of Microbiology and Infectious diseases, Faculty of Medicine and Health Sciences,Université de Sherbrooke,Sherbrooke,Canada.
Linda Pinsonneault4Department of Community Health Sciences, Faculty of Medicine and Health Sciences,Université de Sherbrooke,Sherbrooke,Canada.
Kiran Paranjape5Department of Natural Resource Sciences, Faculty of Agricultural and Environmental Sciences,McGill University,Sainte-Anne-de-Bellevue,Canada.
Cindy Lalancette2Laboratoire de Santé Publique du Québec/ Institut National de Santé Publique du Québec,Sainte-Anne-de-Bellevue,Canada.
Charles-Éric Dolcé1Department of Civil Engineering,Polytechnique Montréal,Montréal,Canada.
Manuela Villion6Centre d'expertise en analyse environnementale du Québec,Québec,Canada.
Louis Valiquette3Department of Microbiology and Infectious diseases, Faculty of Medicine and Health Sciences,Université de Sherbrooke,Sherbrooke,Canada.
Sébastien P Faucher5Department of Natural Resource Sciences, Faculty of Agricultural and Environmental Sciences,McGill University,Sainte-Anne-de-Bellevue,Canada.
Michèle Prévost1Department of Civil Engineering,Polytechnique Montréal,Montréal,Canada.
Polytechnique Montréal · CAUniversité de Sherbrooke · CAInstitut National de Santé Publique du Québec · CAMcGill University · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

OBJECTIVE To determine the source of a Legionella pneumophila serogroup 5 nosocomial outbreak and the role of the heat exchanger installed on the hot water system within the previous year. SETTING A 400-bed tertiary care university hospital in Sherbrooke, Canada. METHODS Hot water samples were collected and cultured for L. pneumophila from 25 taps (baths and sinks) within wing A and 9 taps in wing B. Biofilm (5) and 2 L water samples (3) were collected within the heat exchangers for L. pneumophila culture and detection of protists. Sequence-based typing was performed on strain DNA extracts and pulsed-field gel electrophoresis patterns were analyzed. RESULTS Following 2 cases of hospital-acquired legionellosis, the hot water system investigation revealed a large proportion of L. pneumophila serogroup 5 positive taps (22/25 in wing A and 5/9 in wing B). High positivity was also detected in the heat exchanger of wing A in water samples (3/3) and swabs from the heat exchanger (4/5). The outbreak genotyping investigation identified the hot water system as the source of infections. Genotyping results revealed that all isolated environmental strains harbored the same related pulsed-field gel electrophoresis pattern and sequence-based type. CONCLUSIONS Two cases of hospital-acquired legionellosis occurred in the year following the installation of a heat exchanger to preheat hospital hot water. No cases were reported previously, although the same L. pneumophila strain was isolated from the hot water system in 1995. The heat exchanger promoted L. pneumophila growth and may have contributed to confirmed clinical cases. Infect. Control Hosp. Epidemiol. 2016;1475-1480.

Indexed as

Water MicrobiologyCanadaConservation of Energy ResourcesCross InfectionDisease OutbreaksElectrophoresis, Gel, Pulsed-FieldEnvironment, ControlledFemaleGenotypeHospitals, UniversityHot TemperatureHumansLegionella pneumophilaLegionnaires' DiseaseMaleWater Supply

Identifiers

PMID27640674
PMCPMC5197645
OpenAlexW2519441601

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.