Unusual outbreak of clinical mastitis in dairy sheep caused by Streptococcus equi subsp. zooepidemicus.
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.
Las Heras
Alfonso
A
Departamento de Patología Animal I (Sanidad Animal), Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain.
Vela
Ana I
AI
Fernández
Elena
E
Legaz
Emilio
E
Domínguez
Lucas
L
Fernández-Garayzábal
Jose F
JF
D000818:Animals; D004196:Disease Outbreaks; D016521:Electrophoresis, Gel, Pulsed-Field; D005260:Female; D008413:Mastitis / Q000453:epidemiology / Q000662:veterinary*; D008892:Milk / Q000382:microbiology; D012756:Sheep; D012757:Sheep Diseases / Q000453:epidemiology*; D013290:Streptococcal Infections / Q000453:epidemiology / Q000662:veterinary*; D018502:Streptococcus equi / Q000235:genetics / Q000302:isolation & purification*