Final answer:
The CS/SPDA's overall role is to provide sterilization services on a rigid schedule to ensure patient safety and prevent infections.
Step-by-step explanation:
The overall role of the CS/SPDA (Central Sterile/Sterile Processing and Distribution Associate) is to provide sterilization services on a rigid schedule. Sterilization is necessary for medical items such as equipment and vaccine components to ensure that they are free from microorganisms that can cause infection. CS/SPDAs follow specific protocols for cleaning, disinfecting, and sterilizing medical items to maintain patient safety and prevent the spread of infections.