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Purulent rhinitis and otitis caused by Pseudomonas aeruginosa in sheep showered with contaminated ‘shower wash’
  1. P. J. Watson, BVM&S, MSc, CertSHP, MRCVS1,
  2. X. Jiru, MB2,
  3. M. Watabe, MSc2 and
  4. J. E. Moore, PhD2
  1. 1 Veterinary Laboratories Agency — Penrith, Merrythought, Calthwaite, Penrith CA11 9RR
  2. 2 Northern Ireland Public Health Laboratory, Department of Bacteriology, Belfast City Hospital, Belfast BT9 7AD

Abstract

Three crossbred lowland ewes developed a severe purulent rhinitis and another three ewes developed a severe purulent otitis externa/media after being showered with a wash that had been used 24 to 48 hours before on a separate group of Cheviot ewes with lesions of dermatitis. Pseudomonas aeruginosa was isolated in pure growth from the aural and nasal abscesses and also from the dermatitis lesions. Extended antibiotic susceptibility testing and the random amplification of polymorphic DNA indicated that a single clonal type was associated with the rhinitis and otitis and with the dermatitis, providing strong evidence of an epidemiological link between the lesions of dermatitis and the aural and nasal abscesses through the use of the contaminated ‘shower wash’.

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