Any equine which reacts positively to the official test shall be isolated on the premises where such equine was tested. Any reactor shall be retested, within fourteen days, by the State Veterinarian or his representative to reaffirm the identity and reaction of such equine. All other equines on such premises shall be quarantined. A quarantine shall be in effect until the reactor is disposed of or quarantined to another area approved by the commissioner and any remaining equines are tested, at a time determined by the State Veterinarian, and have reacted negatively. Any reactor shall be permanently identified by the State Veterinarian using a freeze-brand.