Outbreak of Nocardia neocaledoniensis mastitis in a Italian dairy herd [short communication]
- G. Pisoni
- C. Locatelli
- P. Riccaboni
- V. Grieco
- P. Moroni
- L. Alborali
- C. Rosignoli
- S. Allodi
DOIAbstract
Nocardia spp. are an uncommon cause of mastitis, and outbreaks have typically been reported in dairy farms with poor hygienic and management conditions. The outbreak described herein involved a dairy farm with 43 lactating cows that, after a long period with low bulk milk somatic cell counts (<180,000 cells/mL), experienced an increasing incidence of clinical mastitis with bulk milk somatic cell counts greater than 300,000 cells/mL. Fifteen mastitic quarters milk samples from 9 dairy cows were found to be infected by a member of the genus Nocardia, as identified on the basis of se-lected phenotypic and chemotaxonomic characteristics. The isolates were confirmed as Nocardia neocaledo-niensis by 16S rDNA gene sequencing. Average quarter milk ...
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