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Chryseobacterium indologenes bacteraemia in a diabetic child

¹Scuola di Specializzazione in Malattie Infettive – Dipartimento di Patologia Umana, Università di Messina, Italy ²Servizio di Microbiologia, Università di Messina, Italy ³Clinica Pediatrica, Università di Messina, Italy ⁴AILMI (Associazione Italiana per la Lotta contro le Malattie Infettive), Università di Messina, Italy

Correspondence Antonio Cascio acascio{at}unime.it

Received February 4, 2005
Accepted March 9, 2005

Chryseobacterium indologenes is a non-fermentative Gram-negative bacillus that is a rare pathogen in humans. Its occurrence in diabetic children has not been previously reported. In this report, a case is described of C. indologenes bacteraemia possibly associated with the use of a peripheral venous catheter. A 2-year-old boy with type I diabetes mellitus was admitted due to a coma caused by cerebral oedema and was successfully treated for his neurological condition but presented on the tenth day after admission with fever of 40 °C, agitation, restlessness, lack of appetite, somnolence and fatigue. His pulse rate was 90 min^–1 and his respiratory rate was 20 min^–1. Laboratory studies revealed a white blood cell count of 4900 mm^–3 with 67 % neutrophils and 27 % lymphocytes. Two separate blood cultures yielded C. indologenes. Treatment with ceftriaxone was started before the culture results were obtained, and was continued after susceptibility test results were obtained. The patient became afebrile after 48 h, and his general condition improved within 36 h. The infection did not recur. This is believed to be the third case of bacteraemia outside of Asia due to C. indologenes and the first in a diabetic child not otherwise immunocompromised. This case indicates that C. indologenes infection can occur in diabetic children without ventilator or central venous catheter and might be treated with a single agent after in vitro susceptibility tests have been performed.