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- W3201600002 abstract "The efficacy of ambient mass spectrometry to identify and serotype Legionella pneumophila was assessed. To this aim, isolated waterborne colonies were submitted to a rapid extraction method and analysed by direct analysis in real-time mass spectrometry (DART-HRMS).The DART-HRMS profiles, coupled with partial least squares discriminant analysis (PLS-DA), were first evaluated for their ability to differentiate Legionella spp. from other bacteria. The resultant classification model achieved an accuracy of 98.1% on validation. Capitalising on these encouraging results, DART-HRMS profiling was explored as an alternative approach for the identification of L. pneumophila sg. 1, L. pneumophila sg. 2-15 and L. non-pneumophila; therefore, a different PLS-DA classifier was built. When tested on a validation set, this second classifier reached an overall accuracy of 95.93%. It identified the harmful L. pneumophila sg. 1 with an impressive specificity (100%) and slightly lower sensitivity (91.7%), and similar performances were reached in the classification of L. pneumophila sg. 2-15 and L. non-pneumophila.The results of this study show the DART-HMRS method has good accuracy, and it is an effective method for Legionella serogroup profiling.These preliminary findings could open a new avenue for the rapid identification and quick epidemiologic tracing of L. pneumophila, with a consequent improvement to risk assessment." @default.
- W3201600002 created "2021-09-27" @default.
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- W3201600002 date "2021-09-28" @default.
- W3201600002 modified "2023-10-16" @default.
- W3201600002 title "Assessing direct analysis in real‐time mass spectrometry for the identification and serotyping of <i>Legionella pneumophila</i>" @default.
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- W3201600002 doi "https://doi.org/10.1111/jam.15301" @default.
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