Six stables in Delaware are under official quarantine after a horse that displayed neurologic signs was confirmed positive for equine herpesvirus-1 (EHV-1).

The affected horse was euthanatized Jan. 17. While polymerase chain reaction (PCR) tests on nasal swab samples confirmed the horse to be positive for EHV-1, additional tests to determine whether it’s the neurogenic strain are still pending, according to State Veterinarian Sara Busch, DVM.

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