https://www.cdc.gov/coronavirus/2019-ncov/downloads/2019-ncov-factsheet.pdf?utm_medium=email&utm_source=govdelivery
https://content.govdelivery.com/attachments/USHUDPIH/2020/02/28/file_attachments/1389572/stop-the-spread-of-germs.pdf
https://content.govdelivery.com/attachments/USHUDPIH/2020/02/28/file_attachments/1389570/COVID19-symptoms.pdf
https://content.govdelivery.com/attachments/USHUDPIH/2020/02/28/file_attachments/1389571/sick-with-2019-nCoV-fact-sheet.pdf