The Spanish Flu had a death rate of about 2% of the cases in the US. That resulted in at least 500,000 deaths out of a population of about 100 million.
The real question is how many people end up getting infected. It appears the people can be contagious even without obvious symptoms, as was the case for four people in Germany:
German car parts supplier Webasto earlier on Tuesday said an employee at its headquarters in Stockdorf, Bavaria, had become infected following the visit of an employee from China . . . Zapf said the Chinese woman was from Shanghai but her parents, who are from the Wuhan region, had visited her a few days earlier. He added that she had arrived in Germany on Jan. 19, appearing not to have any symptoms, but began to feel ill on her flight home on Jan. 23. She sought medical treatment after landing and tested positive for coronavirus.
https://www.msn.com/en-au/news/other/four-co-workers-in-germany-contract-coronavirus-after-chinese-colleague-visits/ar-BBZoYmN
