7 Pa. Code § 1.144 – Swine injected with hog cholera virus.

(a) Carcasses of swine, other than hyperimmune swine, if presented for inspection after 28 days following injection with hog cholera virus shall be given postmortem inspection without reference to the injected virus.
(b) Carcasses of hyperimmune swine if presented for inspection after ten days following hyperimmunization shall be given postmortem inspection without reference to the injected virus.