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The mortality of community-acquired Legionnaires' disease ranges from 16 to 30 percent if untreated or treated with inactive antibiotics; the mortality for nosocomial Legionnaires' disease may approach 50 percent given the underlying illness of the individual. With the advent of improved analytical techniques leading to early in the day diagnosis and stronger therapies, death has been reduced to less than 10 % in patients with community-acquired legionellosis. 

The treatment of Legionella infection is going to be examined here. The pathogenesis, epidemiology, clinical symptoms, and diagnosis of the organization are discussed separately. 

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In vitro susceptibility answers are not easily interpretable for Legionella since techniques haven't been consistent. Traditional in vitro susceptibility practices in broth and agar have proven unreliable. For example, agar is extracted by the charcoal in buffered charcoal yeast used for Legionella solitude binds antibiotics, and thus, activity of these antibiotics against the organism is wrongly reduced. Also, several commercially available antibiotics, which have exceptional in vitro activity against Legionella by main-stream testing (eg, beta-lactam agents and aminoglycosides), have proven to be relatively ineffective in patients with Legionnaires' disease. 

The intracellular location of the pathogen is relevant to the efficiency of the antibiotic. Antibiotics capable of achieving intracellular levels higher than the minimum inhibitory concentration (MIC) are far more effective clinically than medicines with bad intracellular penetration. Antibiotics with intracellular penetration include the macrolides, quinolones, tetracyclines, and rifampin. 

The empiric discovering that tetracycline and erythromycin appeared to be more efficient than beta-lactam agents and aminoglycosides in early outbreaks of Legionnaires' disease was consistent with in vitro results in intracellular and animal models of Legionnaires' disease. Determination of the susceptibility of Legionella spp to antimicrobial agents has become based upon such intracellular and animal models of Legionella infection [http://www.yan588.com/treating-legionnairesa-disease/ legionella]