Maryland Health - General Section 18-319
§ 18-319.
  (a)   A licensed veterinarian who vaccinates a dog, cat, or ferret against rabies:
    (1)   May select the vaccine to be used;
    (2)   Shall administer the vaccine in a manner that is consistent with the recommendations of the National Association of State Public Health Veterinarians;
    (3)   Shall issue to the owner of the dog, cat, or ferret a vaccination certificate, on the form that the Department approves; and
    (4)   Shall keep a record of the vaccination for a period of 5 years.
  (b)   The information in the rabies vaccination record that a licensed veterinarian keeps may not be used:
    (1)   To license the dog, cat, or ferret; or
    (2)   To tax the owner of the dog, cat, or ferret.