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bioRxiv · 10.64898/2026.06.29.735399

Oligella otitidis sp. nov., isolated from middle ear discharge of children with chronic suppurative otitis media

Beissbarth, J.·Atto, B.·Mandal, P. K.·Cleanthous, A.·Harrison, B.·Gill, N. J.·Smith-Vaughan, H. C.·Kleinecke, M.·Rigas, V.·Leach, A. J.·Morris, P. S.·Marsh, R. L.
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Abstract

Oligella otitidis MSHR-50489EDL strain (ATCC: TSD-462-; DSMZ: DSM 118617) is a new species of the genus Oligella that was isolated from a middle ear discharge swab from a child with chronic suppurative otitis media (CSOM). This Gram-negative coccobacillus produces small, circular, smooth, whitish-opaque and occasionally mucoid colonies. It grows in aerobic conditions at a temperature range from 25-42{degrees}C. Phylogenetic analysis demonstrates a relationship to other species of the genera Oligella and average nucleotide identity and digital DNA-DNA hybridization values indicate a distinct species in comparison to other Oligella species. Thus far, the majority of isolates exhibit resistance to ciprofloxacin, the first line treatment for CSOM.

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Beissbarth, J., Atto, B., Mandal, P. K., Cleanthous, A., Harrison, B., Gill, N. J., Smith-Vaughan, H. C., Kleinecke, M., Rigas, V., Leach, A. J., Morris, P. S., Marsh, R. L.. 2026-06-30. Oligella otitidis sp. nov., isolated from middle ear discharge of children with chronic suppurative otitis media. https://doi.org/10.64898/2026.06.29.735399

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