Occurrence, antibiotic susceptibility and genetic variation of Streptococcus zooepidemicus in Finnish weanling horses with and without respiratory infection

Key Points

• Streptococcus zooepidemicus showed varying antibiotic susceptibility, indicating possible treatment challenges.
• Infections were indicated in weanling horses, with differences in genetic variation observed among strains.
• This analysis included weanling horses across multiple farms in Finland, assessing their health status and infection presence.
• These findings emphasize the need for monitoring antibiotic resistance in equine practice; further studies on resistance trending are necessary.