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Analysis of toxigenic Corynebacterium ulcerans strains revealing potential for false-negative real-time PCR results
Pamela K Cassiday1, Lucia C Pawloski, Tejpratap Tiwari
1National Center for Infectious Diseases, Centers for Disease Control and Prevention, 1600 Clifton Road NE, Mailstop D-11, Atlanta, GA 30333, USA. PCassiday@cdc.gov
Abstract:
Diphtheria surveillance depends on the rapid and reliable recognition of the toxin gene in Corynebacterium diphtheriae. Real-time PCR is a rapid tool to confirm the presence of the diphtheria toxin gene (tox) in an isolate or specimen. We report that some toxigenic Corynebacterium ulcerans strains show atypical results in a real-time PCR for tox.
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