Answer:
Legionella Longbeachae was discovered the first time in 1980 from a patient with pneumonia in Long Beach, California, USA, which is also the reason for the name “longebeachae”3
In contrast to Legionella pneumophila, Legionella Longbeachae is rarely isolated from aquatic environments. The primary environmental reservoir of L. Longbeachae remains unknown; but the major source of human infection is considered to be commercial potting mixes and other decomposing materials, such as bark and sawdust. No reports of L. Longbeachae infection from water systems in the built environment have been confirmed3
The clinical symptoms of L. Longbeachae infections are similar to those of other legionellosis. Risk factors for infection in common with other Legionella infections are smoking, preexisting medical conditions, and immunosuppression.
Gardening activities and use of potting mixes are risk factors that are so far unique to L. Longbeachae infection. The disease predominantly affects persons <50 years of age, and reports suggest the median age for infection is slightly higher for L. Longbeachae than for L. pneumophila3
As with Legionella Pneumophila, the incubation period is between 2 to 10 days, but usually 5-6 days4
