Both sexes may be affected at any age.
Infected animals remain carriers for life, constituting a potential source of disease spread.
The disease may be acute, chronic, or inapparent. Such marking shall be applied to the left shoulder or the left side of the neck of the reactor. Such certificate shall state that each equine has been officially tested and found to be negative to equine infectious anemia within a period not to exceed 6 months prior to the date of entry. The test and the certificate required under this section shall be performed, completed and signed, respectively, by an accredited veterinarian. Equines may be shipped into the state for research purposes or for immediate slaughter in an approved slaughter establishment after first obtaining a special permit from the state veterinarian.