1. Enforcement policy for face masks and respirators during the coronavirus disease (COVID-19) public health emergency (revised): guidance for industry and food and drug administration staff Publication: [Silver Spring, MD] : Center for Devices and Radiological Health, May 2020 Subject(s): COVID-19 -- prevention & controlMasksN95 RespiratorsPersonal Protective EquipmentRespiratory Protective DevicesUnited StatesUnited States. Department of Health and Human Services.United States. Food and Drug Administration.
2. Enforcement policy for face masks, barrier face coverings, face shields, surgical masks, and respirators during the coronavirus disease (COVID-19) public health emergency (revised): guidance for industry and Food and Drug Administration staff Publication: [Silver Spring, MD] : Center for Devices and Radiological Health, September 2021 Subject(s): COVID-19MasksN95 RespiratorsPersonal Protective EquipmentRespiratory Protective DevicesUnited StatesUnited States. Department of Health and Human ServicesUnited States. Food and Drug Administration
