Good question, I don't know about seasonal flu, but here's data a few calcs on this pandemic: According to Johns Hopkins tracking site now (2020-March-23 4:00

Good question, I don't know about seasonal flu, but here's data a few calcs on this pandemic: According to Johns Hopkins tracking site now (2020-March-23 4:00 PM EDT) (1) Global deaths = 18,557 / cases = 414,227: rate calculates to: 4.47% Italy deaths = 6,820 / cases = 69,176: rate calculates to: 9.85% USA deaths = 674 / cases = 51,542: rate calculates to: 1.3% Beyond the obvious shortcomings and inconsistencies of testing in counting the cases, another strong caveat in counting the deaths in a rapidly developing situation is the lag - e.g., the USA is a few weeks behind Italy on the curve, and it takes time for the disease to kill (i.e., we don't know how many US cases are doomed and will be counted as deaths in a few days) (1) https://www.arcgis.com/apps/opsdashboard/index.html#/bda7594740fd40299423467b48e9ecf6 https://www.arcgis.com/apps/opsdashboard/index.html#/bda7594...