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SanAir Technologies Laboratory, Inc.

AIHA accredited environmental microbiology laboratory, specializing in testing for asbestos, mold, lead & metals, and bacteria. Free overnight shipping.

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What is Legionnaires’ Disease?

In the fall of 2017, an outbreak of harmful bacteria linked to the cooling mist at Disneyland in California caused 22 people to develop Legionnaires’ disease, resulting in one fatality. In December of 2018, a health official testified that Legionella bacteria in the water of the cooling tower was the most likely source. This frightening outbreak left many people seeking more information about just what Legionnaires’ disease is and how it is caused. Our goal is to help you understand Legionnaires’ disease and its causes, as well as how we can help if you suspect contamination of this bacteria.

Where Does Legionnaires’ Come From?

The Legionella bacteria is typically found in bodies of freshwater such as lakes, streams or rivers. It only becomes a health concern if found in large quantities within these systems or if it is found in man-made water systems such as hot tubs, sink faucets, air conditioning systems, fountains, water features, or hot water tanks. Legionella bacteria can cause health issues to humans once it is in the form of water vapor. Once it enters the water vapor, it can be inhaled by humans which can potentially lead to legionellosis. In more rare cases, Legionella have been transmitted to the lungs from drinking water. This happens when an individual aspirates on drinking water and typically only occurs in individuals who have difficulty swallowing.

Legionellosis is the name given to the diseases contracted from the inhalation of Legionella. The two diseases that fall under the Legionellosis category are Legionnaires’ Disease and Pontiac Fever. The lesser of the two ailments, Pontiac fever, consists of more mild, flu-like symptoms as a result of exposure to Legionella. According to the Mayo Clinic, Pontiac fever doesn’t infect your lungs, and symptoms usually clear within two to five days. The more severe of the two diseases, Legionnaires’ Disease, can result in much more severe reactions and may even be fatal.

What is Legionnaires’ Disease?

According to Legionella.org, Legionnaires’ disease is a severe, often lethal form of pneumonia caused by exposure to the bacterium Legionella pneumophila found in both potable and non-potable water systems. While Legionella typically affects the lungs, it has been known to infect wounds and/or other organs including the heart in some rare cases.  In most cases, Legionnaires’ disease develops in the lungs within two to ten days of exposure to Legionella. The initial symptoms of Legionnaires’ disease include:

  • Headaches
  • Muscle pain
  • Chills
  • High fever

After a few days of persistent illness, many patients often see more severe symptoms. As the disease worsens, a new set of symptoms often appear, including:

  • A cough, which may bring up mucus and sometimes blood
  • Difficulty breathing
  • Chest pains
  • Gastrointestinal symptoms, such as nausea, vomiting and diarrhea
  • Confusion or other mental impairments

If left untreated, Legionnaires’ disease can result in death. If you think you may have been exposed to Legionella bacteria, you should consult a medical professional immediately, especially if any symptoms are present.

Testing for Legionella

At Sanair Technologies Laboratory, our Legionella analysis is performed using conventional culture method with multiple selective media, DFA confirmations, and latex agglutination to identify isolates as Legionella pneumophila or other Legionella species with very high accuracy. Our team uses a two-step process for the identification of Legionella species from water sources.  We also employ direct fluorescent antibody (DFA) tests at SanAir Technologies Laboratory to identify Legionella pneumophila and other Legionella species.

SanAir Technologies Laboratory has been accredited by the US CDC Environmental Legionella Isolation Techniques Evaluation (ELITE) Program since 2009 to perform Legionella analysis. SanAir has also been approved and certified to perform Legionella analysis in New York State by the New York State Environmental Laboratory Approval Program (ELAP) since 2016.

We have developed a comprehensive web-based reporting format indicating, in an easy to read graphical format, the number of colony-forming units for Legionella at a water system. Contact us to test any water sources that you suspect may be contaminated by Legionella bacteria. You can reach SanAir Technologies Laboratory by dialing (804) 897-1177.

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