Soil as a source of Legionella pneumophila serogroup 1 (Lp1).
OBJECTIVE
To investigate the potential source of a case of Legionnaires' disease caused by an unusual serotype of Legionella pneumophila serogroup 1 (Lp1) in regional Victoria in May 2001.


METHODS
Epidemiological and environmental investigation of the source of infection of a case of Legionnaires' disease in regional Victoria in May 2001.


RESULTS
Extensive environmental investigations did not reveal any cooling water tower systems close to the residence or the shopping centre that the case visited prior to illness. The sputum culture and a soil sample from the field at the plant nursery where the case worked prior to illness were both positive for Legionella pneumophilia serogroup 1, MDU pulsovar 97:103.


CONCLUSIONS
Legionella pneumophila has been found in soil and was further found to be associated with a case of Legionella pneumophila.


CONCLUSIONS
Public health authorities should consider exposures to soil and potting mixes when investigating cases of Legionella pneumophila where the case has no apparent association with cooling towers. Safe gardening practices should be promoted among the community.
Wallis
Lara
L
School of Public Health, Faculty of Health Sciences, La Trobe University, Victoria, Bundoora. 12wallis@students.latrobe.edu.au
Robinson
Priscilla
P
D006801:Humans; D016952:Legionella pneumophila / Q000145:classification* / Q000302:isolation & purification*; D007877:Legionnaires' Disease / Q000209:etiology; D008297:Male; D008875:Middle Aged; D012988:Soil Microbiology; D014739:Victoria