DOI: 10.1101/516880Jan 17, 2019Paper

Carriage of a single strain of non-toxigenic Corynebacterium diphtheriae biovar Belfanti (Corynebacterium belfantii) in four patients with cystic fibrosis

BioRxiv : the Preprint Server for Biology
Diane PivotSylvain Brisse


Cystic fibrosis (CF) patients are commonly colonized by bacterial pathogens, which can induce persistent lung inflammation and may contribute to clinical deterioration. Colonization of CF patients and cross-transmission by Corynebacterium diphtheriae has not been reported so far. The aim of this article was to investigate the possibility of a cross transmission of C. diphtheriae biovar Belfanti between four patients of a CF center. C. diphtheriae biovar belfanti (now formally called C. belfantii) isolates were collected from four patients in a single CF care center over a 6 years period and analyzed by microbiological methods and whole genome sequencing. Epidemiological links among patients were investigated. Ten isolates were collected from 4 patients. Whole genome sequencing of one isolate from each patient showed that a single strain was shared among them. In addition, one patient had the same strain on two consecutive samplings nine months apart. The strain was non-toxigenic and was susceptible to most antimicrobial agents. Ciprofloxacin resistance was observed in one patient. Transmission of the strain among patients was supported by the occurrence of same-day visits to the CF center. This study demonstrates colonization o...Continue Reading

Related Concepts

Corynebacterium diphtheriae
Cystic Fibrosis
Disease Transmission
Diptheria protein
Resistance Process

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