Possible Clues:

• Free from bacteria, surgically clean
• Preventing decay or putrefaction
• Protected from virus since it returned in European computer
• Space? It became sterile
• A doubter, dismissing second item with germicidal properties
• Medically clean
• Microbe-free
• A month in charge of preventing infection
• Paciest (anag.)
• Sterile space, it must be treated