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SESK: Stuff Everyone Should Know · sesk.info/horse-strangles-isolate-new

UMN Extension says to ideally isolate new horses for how long to guard against strangles?

Isolate new arrivals for two to three weeks.

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  1. One day
  2. Six months
  3. Two to three weeks ✔

Why: Strangles is a highly contagious bacterial infection of the upper airway. It spreads by horse-to-horse contact and by shared tack, troughs and handlers, so UMN suggests isolating new horses for two to three weeks.

Huh, didn't know that: Early signs include a fever above 102 F and nasal discharge that starts clear and turns thick and yellow.

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References

Answer: Two to three weeks. Strangles is a highly contagious bacterial infection of the upper airway. It spreads by horse-to-horse contact and by shared tack, troughs and handlers, so UMN suggests isolating new horses for two to three weeks.

  1. Strangles in horses (UMN Extension) extension.umn.edu/node/13551
    Ideally, isolate new horses for two to three weeks.
    Checked 2026-10-10.
  2. Strangles in horses (UMN Extension) extension.umn.edu/node/13551
    a highly contagious bacterial infection of the upper airway in horses
    Checked 2026-10-10.
  3. Strangles in horses (UMN Extension) extension.umn.edu/node/13551
    painful swelling of the lymph nodes
    Checked 2026-10-10.

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