The Centers for Disease Control and Prevention has released frequently asked questions for hospitals notifying patients of risk from potentially contaminated heater-cooler devices used during cardiac surgery. CDC last month advised hospitals to alert clinicians and patients that Stöckert 3T heater-cooler devices, made by LivaNova PLC (formerly Sorin Group Deutschland GmbH), may have been contaminated with Mycobacterium chimaera during manufacturing. The FAQs, which were added to a CDC toolkit for notifying clinicians and patients, address questions such as how far back in time hospitals should go to notify patients.