Dr. Don and Professor Ben talk about the risks from potting soil. Dr. Don - not risky ?? Professor Ben - not risky ?? Exposure to potting soils and compost material as potential sources of Legionella pneumophilia in Australia - ScienceDirect ‎Pine Species Provide a Niche for Legionella Longbeachae Does Potting Mix Cause Legionnaires’ Disease in Gardeners? - Garden Myths Legionella longbeachae and Legionellosis Legionnaires Disease Cause and Spread | Legionella | CDC Legionnaires’ Disease Associated With Potting Soil — California, Oregon, and Washington, May–June 2000 An outbreak of Pontiac fever due to Legionella longbeachae serogroup 2 found in potting mix in a horticultural nursery in New Zealand | Epidemiology & Infection | Cambridge Core Popcorn Lung – Causes, Symptoms, Diagnosis, and Treatment Risk Factors for Legionella longbeachae Legionnaires’ Disease, New Zealand