Source: Nicholas LePan, History of Pandemics, Visual Capitalist, March 14, 2020, https://www.visualcapitalist.com/history-of-pandemics-deadliest/.
Health DataViz: History of Pandemics (Visual Capitalist)
Michael Sandberg's Data Visualization Blog
Getting people excited about their data one visual at a time™
Michael Sandberg's Data Visualization Blog 
I wish you had included a link to the original, rather than just listing the source.
Hi Monica. I usually do include the link. I just added it. Thanks, Michael