Legionella bacteria, while usually not a problem for healthy adults, can be most serious and even fatal for patients who are immune compromised, including those in Intensive Care Units, the very young and the very old, the chronically ill, and post-surgical, cancer and transplant patients. These patients risk becoming infected through a buildup of microbes that can inhabit a hospitals water system, where they have oftentimes become resistant to traditional methods of cleaning and disinfection.
At-risk patients can become ill through any exposure to hospital water, whether through ingestion, comforting mouth sores with ice cubes, bathing, inhalation of shower mist or being treated with equipment washed in hospital water.
Many healthcare professionals arent aware of whats lurking in their water in the summer or any season, especially the water used with critically ill and at-risk patients. As a result, countless Legionella and other harmful microorganisms that can cause serious infections go undetected, according to Janet E. Stout, PhD, an international expert on Legionella and other microbes in hospital water. Stout, who is director of the Special Pathogens Laboratory and a microbiologist at the
Speaking at the annual meeting of the Association for Professionals in Infection Control and Epidemiology (APIC) in
Patients, their families and caregivers need to be aware of the potential for waterborne infection any time they are hospitalized, particularly if they are seriously ill or undergoing treatment that affects their immune systems, according to Stout.
Hospital-associated infections (HAIs) of all types are a serious problem in the
Stout noted that 18,000 cases of Legionnaires disease are reported in the
The financial costs associated with a single Legionella outbreak can run anywhere from $800,000 to well over $1.5 million, according to Stout, with an incalculable cost to a hospitals reputation. And thats just the tip of the iceberg, as infectious disease experts continue to identify new microbes in hospital water. Prevention is critical because many of these microbes are increasingly antibiotic-resistant, making the infections even harder, if not impossible, to treat.
There are solutions, however, according to Stout, noting that no single systemic disinfection technology can completely eliminate these microorganisms from hospital water systems. The germs survive and even thrive in hospital plumbing despite chemical and heat-based treatments designed to eradicate them. Many of the germs live in biofilms, communities of microorganisms that adhere to the pipes and are protected from systemic disinfection treatments. Waterborne microbes may also be harbored by amoebae that shelter them and safely transport them to distant locations in the hospitals water system.
Effective protection for high-risk immuno-compromised patients (cancer and transplant patients) requires delivery of water that meets a higher standard than normal tap water. One option is the addition of point-of-use filtration technology. Citing studies conducted by the VA Pittsburgh Healthcare System, the
Patients should become familiar with these problems and take preventive steps to protect themselves. Stout offers the following tips to patients, their families and caregivers:
-- Check your hospitals infection rates if you can, and find out how your hospital compares to others in your region. The issue is timely because a growing number of states, including
-- Ask the hospital if it tests its water system for Legionella, common waterborne microorganisms that cause disease and other sources of infection.
-- Find out if the hospital has a waterborne pathogen prevention plan and whether any water treatment measures are used, such as chemical treatment or filters (point-of-use filtration) on faucets, showerheads and ice machines to reduce your risk of exposure to waterborne microbes.
-- Transplant patients and other high-risk patients can reduce the risk of Legionella and other disease-causing germs in the water by using filtered or bottled water.
-- If you are a patient at high risk for infection (especially transplant patients) and your hospital care unit does not have a prevention plan or point-of-use filters for faucets, showers and ice machines, avoid exposure to non-sterile or untreated tap water. Typical tap water exposures include sucking on ice, drinking water, bathing, showering and use of medical equipment that has been rinsed in hospital tap water.
-- Ask the hospital about any precautions you should take once youve been discharged. Boiling water for drinking has been recommended for immuno-compromised patients.
The nation has a critical need for effective infection control practices for patients and for healthcare workers, particularly in the summer, noted Stout. This is a wake-up call for preparedness and prevention, not just for hospitals, but for patients as well, she said.
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Source: Pall Corporation