2012•Applied and Environmental MicrobiologyOpen access

Counting Legionella Cells within Single Amoeba Host Cells

Helen Y. Buse, Nicholas J. Ashbolt

Abstract

Here we present the first attempt to quantify Legionella pneumophila cell numbers within individual amoeba hosts that may be released into engineered water systems. The maximum numbers of culturable L. pneumophila cells grown within Acanthamoeba polyphaga and Naegleria fowleri were 1,348 (mean, 329) and 385 (mean, 44) CFU trophozoite(-1), respectively.

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Key concepts: Naegleria, Legionella pneumophila, Naegleria fowleri, Amoeba (genus), Acanthamoeba, Biology, Microbiology, Legionella