|Description:||The Petri dish culture plate depicted here contained an unknown growth medium, which had been inoculated with a Legionella pneumophila bacterial inoculum. Of importance is the brown pigmentation created by the growing bacterial organisms atop this growth medium.|
Legionnaires' disease is caused by a type of bacteria called Legionella. The bacteria got its name in 1976, when many people who went to a Philadelphia convention of the American Legion suffered from an outbreak of this disease, a type of pneumonia (lung infection). Although this type of bacteria was around before1976, more illness from Legionnaires' disease is being detected now. This is because we are now looking for this disease whenever a patient has pneumonia.