As used in this chapter : 1. “Classical swine fever” means the contagious, infectious, and communicable disease of swine commonly known as hog cholera. 2. “Destroy” means condemn under state authority and slaughter or otherwise kill as a result of or pursuant to such condemnation. 3. “Exposed” means all swine in physical contact with a known infected herd or tended by a person having direct contact with an infected herd. [C66, 71, 73, 75, 77, 79, 81, §166B.1 ] 86 Acts, ch 1245, §619 ; 2012 Acts, ch 1095, §41, 42 Further definitions; see §159.1