Legionella Pneumophila Causes Legionella Pneumonia, Legionnaires Disease, Legionellosis

Legionella pneumonia, Legionnaires disease and legionellosis are all terms used to describe one potentially deadly bacterial infection.  The bacteria legionella pneumophila most often causes this life threatening infectious disease.

Not proven to be contagious, Legionnaires disease is a severe form of pneumonia. Legionella bacterium also causes Pontiac fever, a milder influenza like condition.

Legionellosis respiratory infection is caused by inhaling microscopic water droplets containing legionella pneumophila. Legionella pneumonia mainly affects your lungs and causes symptoms such as:

Legionnaires’ disease occasionally cause infections in wounds and in other parts of the body, i.e. the heart.

Pontiac fever, a mild form of legionellosis, typically only cause symptoms like:

  • fever
  • chills
  • headache
  • muscle aches

These symptoms usually clear up in under a week.

Legionella type bacteria do well in warm, damp environments. And can survive for months within:

  • soil
  • rivers
  • lakes
  • misters
  • fountains
  • hot springs
  • cruise ships
  • whirlpool spas
  • water systems
  • air conditioning systems

The legionella pneumophila levels in natural environments are typically too low to cause health problems. Historically, most legionellosis outbreaks result from warm, moist, air conditioning systems in large buildings.

You’re more likely to be infected by legionella pneumophila if you:

When not treated promptly, Legionnaires’ disease can lead to:

All can cause an end to your life.

Legionella pneumonia is treated with antibiotics.  The earlier you receive treatment the less likely you’ll experience lingering health issues, serious complications or death.

Pontiac fever requires no treatment and causes no lasting health concerns.

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