The Role of Legionella in Indoor Air Quality And Other Related Information

Ecology of Legionella organisms

Found in water.
Legionella do not survive in dry environments.
This is very important when considering where to sample.
Because of their nutritional requirements, to amplify significantly they must live inside of free living protozoans and amoebae as parasites.
Growth outside of organisms only documented on laboratory media.
Legionella live inside of humans as intracellular parasites of macrophages.
    Macrophage cells are normal components of the human immune system that resemble protozoans.