With 12 reported deaths and over 100 illnesses, New York City’s recent Legionnaires’ disease outbreak has many building owners and operators wondering what they can do to prevent it. H2M’s own Paul Ponturo has offered up his expertise in handling legionella-related concerns to help answer some of the common questions you may have.
How did Legionnaires’ disease gets its name?
Legionnaires’ disease, also called legionellosis, was originally uncovered in an outbreak that occurred at a Bicentennial American Legion celebration in Philadelphia in 1976. Approximately 221 attendees fell ill and 34 died. Legionella bacteria was discovered in the lung tissue of a victim and in the cooling tower of the hotel hosting the convention.
What is Legionnaires’ disease?
It is a form of pneumonia caused by legionella bacteria. Legionella are widespread in natural water, and also found and distributed in man-made environments. About 48 legionella species have been identified with approximately half associated with human disease. One species, L. pneumophilia, is the most common causative agent in human legionella infections, and is regarded to be the most virulent, accounting for approximately 90% of cases.
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