Clinical otolaryngology and allied sciences
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A prospective study of otitis externa in the district of South Bedfordshire was undertaken between October 1990 and January 1991. Patients were referred untreated by general practitioners; self-referred patients with external otitis were also included. ⋯ Regular swimming emerged as a significant factor in the aetiology of otitis externa. The commonest organism cultured was Pseudomonas aeruginosa and this accounted for the most severe cases seen.