Good Manufacturing Practice Considerations for Responding to COVID-19 Infection in Employees in Drug and Biological Products Manufacturing: Guidance for Industry [open pdf - 117KB]
From the Introduction: "FDA [U.S. Food and Drug Administration] plays a critical role in protecting the United States from threats such as emerging infectious diseases, including the Coronavirus Disease 2019 (COVID-19) pandemic. FDA is committed to providing timely guidance to support response efforts to this pandemic. FDA is issuing this guidance to provide recommendations to drug and biological product manufacturers regarding:  Manufacturing controls to prevent contamination of drugs;  Risk assessment of SARS-CoV-2 [severe acute respiratory syndrome coronavirus 2] as it relates to drug safety or quality;  Continuity of manufacturing operations."
U.S. Food and Drug Administration: https://www.fda.gov/