1. Department of Pediatrics, Cliniques St-Jean, Brussels, Belgium
2. Department of Intensive Care Unit, Mayotte Hospital, Mamoudzou, France
3. Department of Paediatrics, Mayotte Hospital, Mamoudzou, France
4. Institut Pasteur, Centre National de Reference des Corynebacteries du complexe diphtherae, Paris, France
5. Department of General Pediatrics and Pediatric Infectious Diseases, Universite Paris Cite, Hopital Necker‐Enfants Malades, APHP, Paris, France