2 Miss. Code. R. 101-2-10-105
When a horse, mule, jack, or burro is found positive by an official E.I.A. test and an E.I.A. retest by state personnel, all horses, mules, jacks, and burros on the same premises (farm, pasture or stable), and all other horses, mules, jacks, and burros located on adjacent farms, pastures, or stables within 200 yards or other horses or equidae which shall have been so located within 60 days prior to the positive testing of a horse or other equidae officially tested by state regulatory personnel 30 to 45 days after the isolation or removal of the positive reactor. All horses, mules, jacks and burros on the same farm, pasture or stable of the E.I.A. positive animal, shall be quarantined until officially tested after 30 to 45 days and found negative to the E.I.A. test.
2 Miss. Code. R. 101-2-10-105