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Veterinaria México

Print version ISSN 0301-5092


HERNANDEZ VIDAL, Gustavo et al. Localization of Serratia marcescens in bacterial and fungal profile of conjunctiva of clinically healthy horses from Monterrey, Nuevo Leon, Mexico. Vet. Méx [online]. 2010, vol.41, n.4, pp.239-249. ISSN 0301-5092.

The conjunctival normal microflora, formed by fungi, yeast and bacteria, of 50 clinically healthy horses from Monterrey, Nuevo Leon, was identified using three to 12 year-old horses of different breeds and gender. Samples were taken from the conjunctival sac of both eyes (n =100 eyes) using a cotton swab under sterile conditions. No eye was negative to the presence of the microorganism. There were differences in colony types in each eye of the same animal. One hundred percent were positive to fungal and bacteria colonies in both eyes, while 60% were positive to yeast. In the present study Serratia marcescens, a pathogenic, opportunist and multidrug-resistant organism, is reported for the first time in the conjunctival sac in horses. Serratia marcescens was isolated from 21 clinically healthy horses (42%) with a number of colony forming units (cfu) that ranged from 9 to 42.

Keywords : Serratia marcescens; Eye; Horses; Conjunctiva; Keratomycosis.

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