Legionella

The genus Legionella is a pathogenic group of Gram-negative bacteria that includes the species L. pneumophila, causing legionellosis (all illnesses caused by Legionella) including a pneumonia-type illness called Legionnaires' disease and a mild flu-like illness called Pontiac fever. On January 18, 1977, the causative agent was identified as a previously unknown bacterium subsequently named Legionella. See Legionnaires' disease for full details.

Legionella

The genus Legionella is a pathogenic group of Gram-negative bacteria that includes the species L. pneumophila, causing legionellosis (all illnesses caused by Legionella) including a pneumonia-type illness called Legionnaires' disease and a mild flu-like illness called Pontiac fever. On January 18, 1977, the causative agent was identified as a previously unknown bacterium subsequently named Legionella. See Legionnaires' disease for full details.