The culture of Salmonella enteritidis obtained from organ samples other than lungs or intestines shall be the basis for declaring such flocks to be infected. All eggs from such flocks shall be sent only to breaking plants for pasteurization until said flocks are depopulated. Replacement birds shall not be introduced into the houses of such flocks until the flocks have been depopulated and the environment has been cleaned and disinfected and retested pursuant to the procedure set forth in section 57.8(b) of this Part and found negative for Salmonella enteritidis.