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Peer-reviewed veterinary case report

Cellulitis and subcutaneous abscesses caused by Rhodococcus equi infection in a foal.

Journal:
Journal of the American Veterinary Medical Association
Year:
1987
Authors:
Perdrizet, J A & Scott, D W
Species:
horse

Plain-English summary

A 3-month-old Thoroughbred filly was diagnosed with cellulitis, which is a skin infection, and had abscesses, or pockets of pus, under her skin. She showed signs like a large sore with smaller pus-filled bumps on the inside of her right hock, as well as abscesses in her groin and mammary gland areas. Blood tests showed an increase in white blood cells, which is a sign of infection, and the bacteria Rhodococcus equi was found in her infected areas. After being treated with antibiotics erythromycin and rifampin for 35 days, she made a full recovery.

Abstract

Cellulitis and subcutaneous abscess formation was diagnosed in a 3-month-old Thoroughbred filly. Clinical signs consisted of a large ulcerated plaque, with satellite pustules on the medial aspect of the right hock and subcutaneous abscesses in the right inguinal and mammary gland areas. Laboratory analysis revealed mature neutrophilia. Rhodococcus equi was isolated from the cellulitis and the subcutaneous abscess. Oral administration of erythromycin and rifampin for 35 days resulted in a clinical cure.

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Original publication: https://pubmed.ncbi.nlm.nih.gov/3610765/