Characterization
L. pneumophila is an acid-fast, non-sporulating, and morphologically a non-capsulated, rod-like bacterium, often characterized as being a coccobacillus. aerobic and unable to hydrolyse gelatin or produce urease, it is also non-fermentative. L. pneumophila is neither pigmented nor does it autofluoresce. It is oxidase- and catalase-positive, and produces beta-lactamase. L. pneumophila has a colony morphology that is gray-white with a textured, cut-glass appearance; it also requires cysteine and iron to thrive.
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