This.
Care to explain?
CDC estimates that flu has resulted in between 9.3 million and 49 million illnesses each year in the United States since 2010.Multiply that by 5 or more, then factor in because more people get infected and get infected quicker, they can then pass it on much quicker, the exponential effect it will have.
if we just take the middle range of those numbers and multiply by a conservative 5, that's 30 million x 5.150 million Americans, USA population is 327 million, so it's basically 50% like predicted.