The difficulty of cultivation of spp. from water samples remains a strenuous task even for experienced laboratories. The long incubation periods for make isolation difficult. In addition, the water samples themselves are often contaminated with accompanying microbial flora, and therefore require complex cultivation methods from diagnostic laboratories. In addition to the recent update of the standard culture method ISO 11731:2017, new strategies such as quantitative PCR (qPCR) are often discussed as alternatives or additions to conventional culture approaches. In this study, we compared ISO 11731:2017 with qPCR assays targeting spp., , and serogroup 1. In samples with a high burden of accompanying microbial flora, qPCR shows an excellent negative predictive value for , thus making qPCR an excellent tool for pre-selection of negative samples prior to work-intensive culture methods. This and its low limit of detection make qPCR a diagnostic asset in Legionellosis outbreak investigations, where quick-risk assessments are essential, and are a useful method for monitoring risk sites.
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| http://dx.doi.org/10.3390/ijerph18105436 | DOI Listing |
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