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Legionella Plate 01.png
Legionella sp. under ultraviolet illumination
Scientific classification
Kingdom: Bacteria
Phylum: Proteobacteria
Class: Gammaproteobacteria
Order: Legionellales
Families and genera


The Legionellales are an order of Proteobacteria. Like all Proteobacteria, they are Gram-negative.[1] They comprise two families, typified by Legionella and Coxiella, both of which include notable pathogens. For example, Q fever is caused by Coxiella burnetii and Legionella pneumophila causes Legionnaires' disease.[1]


  1. ^ a b George M. Garrity: Bergey's Manual of Systematic Bacteriology. 2. Auflage. Springer, New York, 2005, Volume 2: The Proteobacteria, Part B: The Gammaproteobacteria

External links[edit]

  • Legionellales LPSN List of Prokaryotic names with Standing in Nomenclature