The US Center for Disease Control (CDC) National Institute for Occupational Safety and Health (NIOSH) regulates respirators (N95 masks) for occupational health. NIOSH maintains an extensive list of approved N95 respirators. These NIOSH rated respirators are intended for industrial use, but are appropriate for healthcare use under the emergency circumstances brought on by the COVID-19 pandemic, hence these respirators will not be found on the FDA Establishment Registration & Device Listing database.