Streptococcus equi subspecies equi in horses in Israel: Seroprevalence and strain types

S. Tirosh-Levy, S. E. Blum, K. F. Steward, A. S. Waller, A. Steinman*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


The purpose of this cross-sectional study was to determine the seroprevalence of Streptococcus equi in Israel, to monitor seropositive horses over time and to identify archived strains that were recovered from Israeli horses. A serological survey of 200 healthy horses on 20 farms throughout Israel was performed to detect recent exposure to S equi antigens A and C via indirect ELISA. Seroprevalence was 9.5 per cent (19/200) and positive horses were found in 30 per cent (6/20) of the farms. Sixteen horses that returned a positive serology result were retested three and six months later. Most (12/16) positive horses remained positive, which suggests the presence of animals with persistent infection. Molecular characterisation of S equi strains by sequencing of the SeM gene of 16 archived isolates of S equi that were recovered from clinical cases of strangles between 2008 and 2012 identified two strains: SeM-2 and SeM-28.

Original languageAmerican English
Article numbere000187
JournalVeterinary Record Open
Issue number1
StatePublished - Jan 2016

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