Abstract
We report the first case of early-onset systemic neonatal infection associated with Moraxella osloensis bacteriemia in a full term baby. The genus Moraxella is constituted by a group of pleomorphic bacteria obligate aerobes, Gram-negative, oxidase positive and indole negative infrequently isolated from clinical specimens. The organism is rarely reported in the literature as the causative agent of infection in humans, mostly in immunocompromised patients. Only 12 cases of M. osloensis-related infections during childhood have been reported in the literature so far. This unique report of M. osloensis infection, during the neonatal period, concerns the isolation of the bacteria in purulent secretions from the eyes of a 3-week-old baby with opthalmia. In our patient, the precocity of the onset of symptoms allows us to hypothesize a vertical transmission of the bacteria.
Highlights
(4) We report the first case of early-onset systemic neonatal infection, most likely due to vertical transmission of M. osloensis
Moraxella osloensis is rarely reported in the literature as the causative agent of infection in humans
The current medical literature on Moraxella osloensis essentially comes from case reports of infections in humans, in immunocompromised patients with malignancies. [4,5,6,7]
Summary
The genus Moraxella is constituted by a group of pleomorphic bacteria obligate aerobes, Gram-negative, oxidase positive and indole negative, infrequently isolated from clinical specimens: the main species (M. catarrhalis, M. nonliquefaciens, M. and M. lincolnii osloensis) colonize as saprophytes the upper respiratory tract and occasionally the skin and urogenital tract in humans. [1,2,3] The clinical significance of M.osloensis isolates may be difficult to determine, because the organism is rarely reported in the literature as the causative agent of infection in humans, mostly immunocompromised patients. [4] We report the first case of early-onset systemic neonatal infection, most likely due to vertical transmission of M. osloensis
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