NCIt definition : A species of aerobic, gram negative, rod shaped bacteria in the phylum Proteobacteria.
This species is motile by flagella, nonacid fast, pleomorphic, nonencapsulated, nonfermentative,
urease negative and oxidase and catalase positive. L. pneumophila is pathogenic, being
the causative agent of legionellosis or Legionnaires disease.;
Alternative definition : CDISC: Any bacterial organism that can be assigned to the species Legionella pneumophila.;