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Volume 14, Number 9—September 2008
Dispatch

Occurrence and Clinical Relevance of Mycobacterium chimaera sp. nov., Germany

Birgitta SchweickertComments to Author , Oliver Goldenberg, Elvira Richter, Ulf B. Göbel, Annette Petrich, Petra Buchholz, and Annette Moter
Author affiliations: Charité-Universitätsmedizin, Berlin, Germany (B. Schweickert, A. Petrich, U.B. Göbel, P. Buchholz, A. Moter); Transgenomic Ltd., Glasgow, Scotland, UK (O. Goldenberg ); Nationales Referenzzentrum für Mykobakterien am Forschungszentrum, Borstel, Germany (E. Richter);

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Table 1

Distribution of mycobacterial species and sequevars*

Species, sequevar† Total isolates, 
no. (%), n = 166 Isolates from Charité,‡ no. (%), n = 97 Isolates from NRC,‡ no. (%), n = 69 Odds ratio (p value§)
MAC
MAC-A 143 (86.1) 90 (92.8) 53 (76.8) 3.88 (p = 0.003)
MAC-C 2 (1.2) 1 (1.0) 1 (1.5) ND
MAC-E
 1 (0.6)
 1 (1.0)
 0
 ND
Min
Min-A 17 (10.2) 3 (3.1) 14 (20.3) 0.12 (p<0.001)
Min-C 3 (1.8) 2 (2.1) 1 (1.5) ND

*MAC, M. avium complex species; MAC-A, M. chimaera sp. nov.; ND, not done; Min, M. intracellulare; Min-A, M. intracellulare type strain.
†Classification of MAC strains according to the taxonomy of Frothingham and Wilson (3).
‡Charité, Charité University Hospital, Berlin, Germany; NRC, National Reference Center for Mycobacteria, Borstel, Germany.
§χ2 test, software package Stata version 9 (Stata Corporation, College Station, TX, USA).

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