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Pontiac fever is known to have a short incubation period of 1 to 3 days. No fatalities have been reported and cases resolve spontaneously without treatment. [8] It is often not reported. [9] Age, gender, and smoking do not seem to be risk factors. Pontiac fever seems to affect young people in the age medians of 29 to 32.
A legionellosis is any disease caused by Legionella, including Legionnaires' disease (a pneumonia) and Pontiac fever (a related upper respiratory tract infection), [10] but Legionnaires' disease is the most common, so mentions of legionellosis often refer to Legionnaires' disease.
Legionella feeleii is a Gram-negative, rod-shaped bacterium from the genus Legionella which was isolated from an automobile plant and which was held responsible for causing Pontiac fever in 317 workers. [3] [4] The organism did not grow on blood agar, required L-cysteine, and showed significant quantities of branched-chain fatty acids.
Legionella is a genus of gram-negative bacteria that can be seen using a silver stain or grown in a special media that contains cysteine, an amino acid.It is known to cause legionellosis [3] (all illnesses caused by Legionella) including a pneumonia-type illness called Legionnaires' disease and a mild flu-like illness called Pontiac fever. [3]
An outbreak of what was dubbed Pontiac fever occurred in a health department in Pontiac, Michigan in July 1967. No one died. [19] Although caused by the same bacterium, Pontiac fever is a milder ailment than Legionnaires' disease. Pneumonia is absent in those with Pontiac fever. [15] [16]
The Legionellales are an order of Pseudomonadota ("Proteobacteria"). Like all Pseudomonadota, they are Gram-negative. [2] They comprise two families, typified by Legionella and Coxiella, both of which include notable pathogens.
It was noted that they suddenly had a high fever, coughs and hallucinations. First they were transferred to the infectious diseases ward for some hours with a suspicion of pneumonia, later they were transferred to intensive care. Tests showed that both patients had legionellosis. The disease proved to be the cause of death of one of the ...
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