Outbreak of Corynebacterium pseudodiphtheriticum Infection in Cystic Fibrosis Patients, France
Figure 1. Phylogenetic tree showing the position of Corynebacterium spp. isolated in patients with cystic fibrosis based on comparisons of the mass spectra obtained with matrix-assisted laser desorption ionization time-of-flight (MALDI-TOF) mass spectrometry (A) and of sequences of the partial RNA polymerase β-subunit gene rpoB (B). For MALDI-TOF, a tree was constructed with Biotyper 2.0 software (Bruker Daltonics, Bremen, Germany) using Euclidean distance. The rpoB tree was constructed by the neighbor-joining method and a maximum likelihood-based distance algorithm and numbers on branches indicate the bootstrap values derived from 500 replications. *Reference strains (Mycobacterium tuberculosis H37Rv, C. propinquum CIP103792T, C. pseudodiphtheriticum CIP103420T).