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Neisseria sicca, although considered a harmless saprophyte, has been recognised as an etiologic agent in three cases of pneumonitis, and rare cases of endocarditis, meningitis, and osteomyelitis, particularly in immunocompromised hosts. We report the case of a 76-year-old man with a community-acquired pneumonia, in whom both sputum samples and bronchial secretions obtained with bronchoscopic protected catheter brush grew pure culture of N. sicca with abundant polymorphonuclear neutrophils. Dramatic clinical improvement only occurred after initiation of an appropriate antibiotherapy according to susceptibility spectrum of the isolated N. sicca. Bronchiectasis underlying lesions were disclosed by computed tomography. N. sicca should be added to the list of commensal organisms able to cause pulmonary infection. Moreover, the association of N. sicca and bronchiectasis has never been published.
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