Wednesday 23 November 2011

The occurrence of Legionella species other than L. pneumophila in clinical and environmental samples in Denmark identified by mip‐gene‐sequencing and MALDI‐TOF‐MS

AbstractIn Denmark, several laboratories use PCR as a routine diagnostic method for Legionnaires’ disease, and almost all PCR positive samples have been investigated by culture.From 1993-2010, we obtained isolates of Legionella species other than Legionella pneumophila (L. non- pneumophila) from respiratory samples from 33 patients, and from 1997-2010, 42 isolates of L. non- pneumophila were obtained and saved from water samples from 39 different sites in Denmark. mip-sequencing was used as a reference method to identify the L. non- pneumophila species. Only one of the 75 isolates did not pass the acceptance criteria with a similarity of = 98% to sequences in the database. The Species distribution between clinical and environmental isolates varied. For the former, four spec...

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