Pseudomonas Aerigunosa

Hospital Economic Impact of an Outbreak of Pseudomonas aeruginosa Infections 
R. Bou*, L. Lorente, A.Aguilar, J. Perpiñán, P. Ramos, M. Peris, D. Gonzalez Journal of Hospital Infection (2009) 71,138e142

This article discusses the economic impact associated with infections due to waterborne pathogens – in this case Pseudomonas aeruginosa. On average, patients with hospital-acquired infections due to Pseudomonas aerigunosa incurred $40,000 in additional costs and extra length of stay in the intensive care unit of 70 days. These figures help to justify the expense of preventive measures such as point-of-use filters or chemical water treatment.

Hospital Tap Water: A Reservoir of Risk for Health Care Associated Infection 
Joseph Steven Cervia, MD, FACP, FAAP, FIDSA,*. Girolamo A. Ortolano, PhD,* and Francis P.Canonica, PhD*, Infectious Diseases in Clinical Practice Volume 16, Number 6, November 2008 

Hospital tap water is recognized as a source for hospital acquired infections. Systemic water treatment and point-of-use filtration technologies are evaluated

Outbreak of Multidrug-Resistant Pseudomonas aeruginosa Colonization and Infection Secondary to Imperfect Intensive Care Unit Room Design  
Susy Hota, MD; Zahir Hirji, MHSc; Karen Stockton, MHSc; Camille Lemieux, MD, LLB; Helen Dedier, MLT; Gideon Wolfaardt, PhD; Michael A. Gardam, MD, MSc Infection Control and Hospital Epidemiology January 2009, vol. 30, no. 1

The role of sinks in the transmission of multi-drug resistant Pseudomonas aeruginosa is the subject of this article.  Thirty-six patients were infected and seven died as a result of exposure to this waterborne pathogen.  The authors speculate that the patients became infected after exposure to water that had splashed around a sink. Pseudomonas was isolated from the sink drain.

Faucets as a reservoir of endemic Pseudomonas aeruginosa colonization / infections in intensive care units
Blanc DS, Nahimana I, Petignat C, Wenger A, Bille J, Francioli P. Intensive Care Med. 2004 Oct;30(10):1964-8.

The role of faucets as a reservoir for Pseudomonas aeruginosa was investigated as the source of infection for patients hospitalized in intensive care units (ICUs).

CONCLUSIONS: These results suggest that the water system of the ICUs was the primary reservoir of patient's colonization / infection with Pseudomonas aeruginosa in a substantial proportion of patients, although the exact mode of acquisition could not be determined.

Alive But Not Infectious   LANCET  Infectious Diseases

What is the significance of viable but non-culturable (VBNC) bacteria in water which can be detected by molecular probes and by physiological activity? The VBNC state has been demonstrated for Salmonella, Shigella, Vibrio and Legionella pneumophila. The article by Rebecca Smith and colleagues provides concrete evidence that these VBNC bacteria may not pose a threat as a hidden reservoir of infectious disease.