Brevundimonas diminuta is a Gram-negative, aerobic, rod-shaped bacterium with a polar flagellum. It belongs to the Caulobacteriales family. So far, the opportunistic pathogen has almost exclusively been proven in immunosuppressed patients with underlying diseases.
Reported diseases elicited by B. diminuta include catheter-associated infections in patients with malignant tumours. In addition, there have been cases of patients with cystic fibrosis or whooping cough, where B. diminuta and other bacteria had been isolated from sputum or nasal discharge. The pathogen was also detected in an ulcer of a patient suffering from systemic lupus erythematosus.
B. diminuta infections in healthy people have not been reported yet.
Due to the small number of cases, the transmission path of the pathogen has not been clarified yet.
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