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Legionella: The “quiet pandemic”

Over the course of the COVID-19 pandemic, it is likely that many people have forgotten about Legionella, which has been described as a “quiet pandemic” by legislators in the United States. While the focus of many government health authorities has been to react to and reduce the impact of COVID-19, the many stay at home… Read More

Facts & Figures of Legionellosis

What causes Legionellosis? Many different types of bacteria can cause respiratory diseases. Ranging in seriousness from Streptococcal pharyngitis (strep throat) to much more deadly pathogens like Mycobacterium tuberculosis or Vibrio cholerae (cholera), bacterial infections of the respiratory tract present a major challenge for health care providers around the world. Tuberculosis alone is estimated to make up to 10 million people per year sick.   A serious bacterial… Read More

A Primer On Legionella

A Synopsis on Legionella Legionella, the bacteria responsible for causing Legionnaire’s disease, is one of the most significant sources of waterborne disease outbreaks in the U.S. Investigations by the CDC have indicated that many cases could have been prevented through better water management. We’ve previously written about Legionnaire’s disease and how ATP testing can be… Read More

Who Turned up the Heat? What You Need to Know about Biofilms and Heat Transfer.

  Whether you work at an oil refinery, power plant, or in an office building, chances are you owe your comfort to a cooling tower.  These engineering marvels are responsible for keeping your process fluids cool, turbines spinning, and even your work environment comfortable by transferring heat from water to air. Of course, where there… Read More

Most Wanted Microbes – Legionella

  From the editor: This is the fifth post in an ongoing series profiling microorganisms of particular significance in water and wastewater systems. In this series we will cover microorganisms of many types including some that are beneficial, inhibitory and pathogenic. Legionella is a mesophilic, pathogenic organism that can cause Legionnaire’s Disease, a potentially fatal… Read More

Using ATP in a Legionella Water Management Plan

  Between December 2014 and September 2015 there were three clusters of Legionnaires’ disease outbreaks in the Bronx, New York City. Legionnaires’ disease, a severe form of pneumonia, is caused by inhaling aerosolized water containing certain pathogenic strains of Legionella bacteria. Legionella thrive in warm, stagnant water with low disinfection residuals such as hot water… Read More

Does the Risk of Legionnaire’s Disease Rise When There’s Lead in Your Water?

  Ongoing monitoring shows that lead levels in Flint, Michigan’s water are dropping and getting closer to meeting federal safety standards. That’s some much-needed positive news for the community. But there’s still work to be done. Now, researchers are starting to check residential hot water heaters in Flint homes for Legionella. Legionella grows best in… Read More

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