Electronic-eye faucets

Legionella species contamination in healthcare settings

Emily R M Sydnor, Gregory Bova, Anatoly Gimburg, Sara Cosgrove, Trish M. Perl, Lisa Maragakis

Research output: Contribution to journalArticle

Abstract

objective. To comparee heterotrophic plate counts (HPCs) and Legionella species growth from electronic and manual faucet water samples. design. Proportions of water samples with growth and colony-forming units were compared using Fisher's exact test and the Wilcoxon rank-sum test, respectively. setting. Two psychiatric units and 1 medical unit in a 1,000-bed university hospital. Methods. Water samples were collected from 20 newly installed electronic faucets and 20 existing manual faucets in 3 hospital units. Manual faucets were located in rooms adjacent to the electronic faucets and received water from the same source. Water samples were collected between December 15, 2008, and January 29, 2009. Four electronic faucets were dismantled, and faucet components were cultured. Legionella species and HPC cultures were performed using standard methods. Results. Nearly all electronic faucets (19/20 [95%]) grew Legionella species from at least 1 water sample, compared with less than half (9/20 [45%]) of manual faucets (P=.001). Fifty-four (50%) of 108 electronic faucet water cultures grew Legionella species, compared with 11 (15%) of 75 manual faucet water cultures (P≤.001). After chlorine dioxide remediation, 4 (14%) of 28 electronic faucet and 1 (3%) of 30 manual faucet water cultures grew Legionella species (P=.19), and 8 (29%) electronic faucet and 2 (7%) manual faucet cultures had significant HPC growth (P=.04). All 12 (100%) of the internal faucet components from 2 electronic faucets grew Legionella species. conclusions. Electronic faucets were more commonly contaminated with Legionella species and other bacteria and were less likely to be disinfected after chlorine dioxide remediation. Electronic faucet components may provide points of concentrated bacterial growth.

Original languageEnglish (US)
Pages (from-to)235-240
Number of pages6
JournalInfection Control and Hospital Epidemiology
Volume33
Issue number3
DOIs
StatePublished - Mar 2012

Fingerprint

Legionella
Delivery of Health Care
Water
Nonparametric Statistics
Growth
Hospital Units
Growth Plate
Psychiatry
Stem Cells
Bacteria

ASJC Scopus subject areas

  • Microbiology (medical)
  • Epidemiology
  • Infectious Diseases

Cite this

Electronic-eye faucets : Legionella species contamination in healthcare settings. / Sydnor, Emily R M; Bova, Gregory; Gimburg, Anatoly; Cosgrove, Sara; Perl, Trish M.; Maragakis, Lisa.

In: Infection Control and Hospital Epidemiology, Vol. 33, No. 3, 03.2012, p. 235-240.

Research output: Contribution to journalArticle

Sydnor, Emily R M ; Bova, Gregory ; Gimburg, Anatoly ; Cosgrove, Sara ; Perl, Trish M. ; Maragakis, Lisa. / Electronic-eye faucets : Legionella species contamination in healthcare settings. In: Infection Control and Hospital Epidemiology. 2012 ; Vol. 33, No. 3. pp. 235-240.
@article{11d2102741884f1e93f972e2c3a8baa5,
title = "Electronic-eye faucets: Legionella species contamination in healthcare settings",
abstract = "objective. To comparee heterotrophic plate counts (HPCs) and Legionella species growth from electronic and manual faucet water samples. design. Proportions of water samples with growth and colony-forming units were compared using Fisher's exact test and the Wilcoxon rank-sum test, respectively. setting. Two psychiatric units and 1 medical unit in a 1,000-bed university hospital. Methods. Water samples were collected from 20 newly installed electronic faucets and 20 existing manual faucets in 3 hospital units. Manual faucets were located in rooms adjacent to the electronic faucets and received water from the same source. Water samples were collected between December 15, 2008, and January 29, 2009. Four electronic faucets were dismantled, and faucet components were cultured. Legionella species and HPC cultures were performed using standard methods. Results. Nearly all electronic faucets (19/20 [95{\%}]) grew Legionella species from at least 1 water sample, compared with less than half (9/20 [45{\%}]) of manual faucets (P=.001). Fifty-four (50{\%}) of 108 electronic faucet water cultures grew Legionella species, compared with 11 (15{\%}) of 75 manual faucet water cultures (P≤.001). After chlorine dioxide remediation, 4 (14{\%}) of 28 electronic faucet and 1 (3{\%}) of 30 manual faucet water cultures grew Legionella species (P=.19), and 8 (29{\%}) electronic faucet and 2 (7{\%}) manual faucet cultures had significant HPC growth (P=.04). All 12 (100{\%}) of the internal faucet components from 2 electronic faucets grew Legionella species. conclusions. Electronic faucets were more commonly contaminated with Legionella species and other bacteria and were less likely to be disinfected after chlorine dioxide remediation. Electronic faucet components may provide points of concentrated bacterial growth.",
author = "Sydnor, {Emily R M} and Gregory Bova and Anatoly Gimburg and Sara Cosgrove and Perl, {Trish M.} and Lisa Maragakis",
year = "2012",
month = "3",
doi = "10.1086/664047",
language = "English (US)",
volume = "33",
pages = "235--240",
journal = "Infection Control and Hospital Epidemiology",
issn = "0899-823X",
publisher = "University of Chicago Press",
number = "3",

}

TY - JOUR

T1 - Electronic-eye faucets

T2 - Legionella species contamination in healthcare settings

AU - Sydnor, Emily R M

AU - Bova, Gregory

AU - Gimburg, Anatoly

AU - Cosgrove, Sara

AU - Perl, Trish M.

AU - Maragakis, Lisa

PY - 2012/3

Y1 - 2012/3

N2 - objective. To comparee heterotrophic plate counts (HPCs) and Legionella species growth from electronic and manual faucet water samples. design. Proportions of water samples with growth and colony-forming units were compared using Fisher's exact test and the Wilcoxon rank-sum test, respectively. setting. Two psychiatric units and 1 medical unit in a 1,000-bed university hospital. Methods. Water samples were collected from 20 newly installed electronic faucets and 20 existing manual faucets in 3 hospital units. Manual faucets were located in rooms adjacent to the electronic faucets and received water from the same source. Water samples were collected between December 15, 2008, and January 29, 2009. Four electronic faucets were dismantled, and faucet components were cultured. Legionella species and HPC cultures were performed using standard methods. Results. Nearly all electronic faucets (19/20 [95%]) grew Legionella species from at least 1 water sample, compared with less than half (9/20 [45%]) of manual faucets (P=.001). Fifty-four (50%) of 108 electronic faucet water cultures grew Legionella species, compared with 11 (15%) of 75 manual faucet water cultures (P≤.001). After chlorine dioxide remediation, 4 (14%) of 28 electronic faucet and 1 (3%) of 30 manual faucet water cultures grew Legionella species (P=.19), and 8 (29%) electronic faucet and 2 (7%) manual faucet cultures had significant HPC growth (P=.04). All 12 (100%) of the internal faucet components from 2 electronic faucets grew Legionella species. conclusions. Electronic faucets were more commonly contaminated with Legionella species and other bacteria and were less likely to be disinfected after chlorine dioxide remediation. Electronic faucet components may provide points of concentrated bacterial growth.

AB - objective. To comparee heterotrophic plate counts (HPCs) and Legionella species growth from electronic and manual faucet water samples. design. Proportions of water samples with growth and colony-forming units were compared using Fisher's exact test and the Wilcoxon rank-sum test, respectively. setting. Two psychiatric units and 1 medical unit in a 1,000-bed university hospital. Methods. Water samples were collected from 20 newly installed electronic faucets and 20 existing manual faucets in 3 hospital units. Manual faucets were located in rooms adjacent to the electronic faucets and received water from the same source. Water samples were collected between December 15, 2008, and January 29, 2009. Four electronic faucets were dismantled, and faucet components were cultured. Legionella species and HPC cultures were performed using standard methods. Results. Nearly all electronic faucets (19/20 [95%]) grew Legionella species from at least 1 water sample, compared with less than half (9/20 [45%]) of manual faucets (P=.001). Fifty-four (50%) of 108 electronic faucet water cultures grew Legionella species, compared with 11 (15%) of 75 manual faucet water cultures (P≤.001). After chlorine dioxide remediation, 4 (14%) of 28 electronic faucet and 1 (3%) of 30 manual faucet water cultures grew Legionella species (P=.19), and 8 (29%) electronic faucet and 2 (7%) manual faucet cultures had significant HPC growth (P=.04). All 12 (100%) of the internal faucet components from 2 electronic faucets grew Legionella species. conclusions. Electronic faucets were more commonly contaminated with Legionella species and other bacteria and were less likely to be disinfected after chlorine dioxide remediation. Electronic faucet components may provide points of concentrated bacterial growth.

UR - http://www.scopus.com/inward/record.url?scp=84857021188&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84857021188&partnerID=8YFLogxK

U2 - 10.1086/664047

DO - 10.1086/664047

M3 - Article

VL - 33

SP - 235

EP - 240

JO - Infection Control and Hospital Epidemiology

JF - Infection Control and Hospital Epidemiology

SN - 0899-823X

IS - 3

ER -