Legionellosis

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Legionellosis is a bacterial disease which may root pneumonia. Mainly cases occur as single isolated events. Outbreaks are comparatively rare. An outbreak of this disease in Philadelphia in 1976, mostly among people attending a state convention of the American Legion, led to the name "Legionnaires' Disease." then, the bacterium causing the illness was named Legionella pneumophila and the name of the sickness was changed to legionellosis.

It is estimated that about 25,000 people expand legionellosis in the United States each year. An additional unknown number are impure with the Legionella bacterium and have mild symptoms or no illness at all. Cases occur infrequently and in outbreaks. Outbreaks occur most often in the summer but cases happen all year round. The disease appears to be extending through the air from a soil or water source. All studies to date have shown that person-to-person extend does not occur.

The early symptoms of legionellosis may be flu-like with muscle aches, headache, tiredness and dry cough followed by high fever, chills and infrequently diarrhea. Temperatures commonly reach 102-105 degrees Fahrenheit and chest X-rays often prove pneumonia. The incubation period for legionellosis ranges from two to 10 days, but is frequently five to six days. Antibiotics such as erythromycin, levaquin or azithromycin appear to be efficient in treating the disease.

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