All moneys appropriated to the department for the purposes of this section and Section 120420 shall be made available to local health departments, as defined in Section 101185, or to areawide associations of local health departments. All moneys received by the local departments or areawide associations shall be utilized only for the purchase of rubella vaccines, other necessary supplies and equipment for rubella immunization campaigns, and promotional costs of these campaigns. No moneys appropriated for the purpose of this section and Section 120420 shall be used by the department or by any local department or areawide association for administrative purposes, and these moneys may not be used to supplant or support local health department clinics and programs already regularly operated by the departments, but may be used only for additional county or areawide rubella immunization campaigns. All moneys appropriated for the purposes of this section and Section 120420 shall be expended by March 31, 1971.