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© Research
Publication : Emerging infectious diseases

Retrospective Study of Infections with Corynebacterium diphtheriae Species Complex, French Guiana, 2016-2021.

Team: Biodiversity and Epidemiology of Bacterial Pathogens
Member: Sylvain Brisse
Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Emerging infectious diseases - 01 Aug 2024

Gaillet M, Hennart M, Rose VS, Badell E, Michaud C, Blaizot R, Demar M, Carvalho L, Carod JF, Andrieu A, Djossou F, Toubiana J, Epelboin L, Brisse S

Link to Pubmed [PMID] – 39043387

Link to DOI – 10.3201/eid3008.231671

Emerg Infect Dis 2024 Aug; 30(8): 1545-1554

Human infections with Corynebacterium diphtheriae species complex (CdSC) bacteria were rare in French Guiana until 2016, when the number of cases diagnosed increased. We conducted an epidemiologic, multicenter, retrospective study of all human CdSC infections diagnosed in French Guiana during January 1, 2016-December 31, 2021. A total of 64 infectious episodes were observed in 60 patients; 61 infections were caused by C. diphtheriae and 3 by C. ulcerans. Estimated incidence increased from 0.7 cases/100,000 population in 2016 to 7.7 cases/100,000 population in 2021. The mean patient age was 30.4 (+23.7) years, and male-to-female ratio was 1.7:1 (38/22). Of the 61 C. diphtheriae isolates, 5 tested positive for the diphtheria toxin gene, and all results were negative by Elek test; 95% (61/64) of cases were cutaneous, including the C. ulcerans cases. The increase in reported human infections underscores the need to raise awareness among frontline healthcare practitioners to improve prevention.