AIMS Meeting Book_MYM2023

Challenges with Legionella spp. Testing

 Cultural method: ISO 11731

• Long time to result (7-14+ days)

• Concerns about consistent quantitative accuracy

• Concerns about inclusivity

• Concerns about VBNC

 Infectious dose is unknown. Setting acceptable limits is up to the Water Management Team. • CDC: “There is no ‘safe’ level or type of Legionella”