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Journal of Clinical Microbiology, March 2002, p. 1106-1108, Vol. 40, No. 3
0095-1137/02/$04.00+0     DOI: 10.1128/JCM.40.3.1106-1108.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.

Unusual Outbreak of Clinical Mastitis in Dairy Sheep Caused by Streptococcus equi subsp. zooepidemicus

Alfonso Las Heras,1 Ana I. Vela,1 Elena Fernández,1 Emilio Legaz,2 Lucas Domínguez,1 and Jose F. Fernández-Garayzábal1*

Departamento de Patología Animal I (Sanidad Animal), Facultad de Veterinaria, Universidad Complutense, 28040 Madrid,1 Castellana de Ganaderos Sociedad Cooperativa, Campo Real, 28510 Madrid, Spain2

Received 4 June 2001/ Returned for modification 23 September 2001/ Accepted 4 November 2001

This work describes an outbreak of clinical mastitis affecting 13 of 58 lactating ewes due to Streptococcus equi subsp. zooepidemicus. S. equi subsp. zooepidemicus was isolated in pure culture from all milk samples. All the clinical isolates had identical biochemical profiles and antimicrobial susceptibility patterns and also exhibited indistinguishable macrorestriction patterns by pulsed-field gel electrophoresis, indicating that all cases of mastitis were produced by a single strain.

* Corresponding author. Mailing address: Departamento de Patología Animal I (Sanidad Animal), Facultad de Veterinaria, Universidad Complutense, Avda. Puerta de Hierro s/n, 28040 Madrid, Spain. Phone: 34 91 3943716. Fax: 34 91 3943908. E-mail: garayzab{at}eucmax.sim.ucm.es.

Journal of Clinical Microbiology, March 2002, p. 1106-1108, Vol. 40, No. 3
0095-1137/02/$04.00+0     DOI: 10.1128/JCM.40.3.1106-1108.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.



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