N.M. Admin. Code § 21.30.7.17
A stallion infected with EAV during the breeding season shall immediately cease breeding or immediately cease having semen collected for artificial insemination or semen collected and stored for future use. Since EVA is a reportable disease in the state of New Mexico, the state veterinarian must be immediately notified in the event of clinical EVA disease demonstrated by a positive laboratory test of serum or semen. An owner or agent with a mare booked or bred to a stallion that became infected with EAV during the breeding season shall be immediately notified in writing by the stallion's owner or agent, that the stallion is an EAV shedder. A copy of the written notification shall be sent to the state veterinarian. A stallion infected with EAV during the breeding season shall be classified as an EAV shedder and shall be handled according to the requirements of this rule. Following the stallions classification as a shedder, the state veterinarian may reclassify the stallion as a non-shedder in accordance with this rule.
N.M. Admin. Code § 21.30.7.17