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Cerebrospinal fluid shunt infection due to Gemella haemolysans
William B Lo1, Mitul Patel, Guirish A Solanki
1Departments of Neurosurgery, Birmingham Children’s Hospital, Birmingham, United Kingdom. williamlo@doctors.org.uk
Abstract:
Gemella haemolysans has long been considered a commensal in the human upper respiratory tract. Commensals are natural inhabitants on or within another organism, deriving benefit without harming or benefiting the host. Opportunistic infection of the CNS by the species is exceedingly rare. In the present case, a 16-year-old boy was admitted with a ventriculoperitoneal shunt infection, which was confirmed to be due to G. haemolysans. Following antibiotic treatment, removal of the old shunt, and delayed insertion of a new shunt, the patient made a full neurological recovery. To the authors' knowledge, this is the eighth case of CNS infection with G. haemolysans. Although prosthesis-related infections have been reported in other systems, this is the first case of CNS infection by the bacterium associated with an implant. Previous reported cases of CNS infection by G. haemolysans are reviewed. Due to the variable Gram staining property of the organism, the difficulty in diagnosing G. haemolysans infection is emphasized.
Insights
Gemella haemolysans, typically a harmless commensal, rarely causes opportunistic central nervous system (CNS) infections. This case highlights the first CNS infection linked to a shunt implant, emphasizing diagnostic challenges.
Area of Science:
- Infectious Diseases
- Neurology
- Microbiology
Background:
- Gemella haemolysans is generally a commensal bacterium of the human upper respiratory tract.
- Opportunistic central nervous system (CNS) infections caused by G. haemolysans are exceptionally rare.
- Variable Gram staining properties of G. haemolysans can complicate diagnosis.
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