Mississippi Code Title 41. Public Health § 41-53-7

It shall be the duty of the manufacturer or manufacturers contracted with to furnish virus (vaccine) to furnish with each ampoule (dose) of virus (vaccine), a suitable metal tag approved by the state board of health, which may be securely bradded to the collar of the dog inoculated (vaccinated). Said tag shall have stamped thereon the serial number of vaccination and the year in which said dog was inoculated. This tag shall be furnished to the owner when said dog is inoculated (vaccinated), and it shall be his duty to securely attach same to the collar, and each dog owned by or in the possession of any person within the State of Mississippi shall wear at all times a collar or other device which shall have securely bradded on to it the metal tag provided for above. Any such tag shall not be transferable to any dog other than the dog for which it was issued.