United States. Department of Health and Human Services. "Secretary Azar Declares Public Health Emergency for United States for 2019 Novel Coronavirus, January 31, 2020" in United States. Department of Health and Human Services : Press Releases Relating to the COVID-19 Pandemic (January 31, 2020). https://fraser.stlouisfed.org/title/6354/item/607494, accessed on November 21, 2024.