The health certificate shall certify that the swine to which it refers satisfy all of the following requirements:
(a) Have not been exposesd to any communicable disease.
(b) Are free from evidence of any communicable disease.
The director, when he determines it to be necessary for the enforcement of this chapter, may, by regulation, require the certificate to certify that the swine have been immunized against hog cholera by a method of immunization which is designated by regulations of the director as an effective method of immunization and by the United States Department of Agriculture.
(Amended by Stats. 1967, Ch. 87.)