Because the Wuhan coronavirus spreads so easily, even if contained, the virus is expected to eventually infect at least half of all Americans.
The Spanish Flu of 1918 infected roughly one quarter of the population of this country. The Swine Flu infected about seven percent back in 2009. There are no credible reports that 750 million Chinese have been affected by Covid-19.
Not since the Black Death in the Middle Ages has a pandemic infected the kind of percentage this article suggests. These estimates are wildly exaggerated.
This disease is 2 - 3 times as infectious as the flu, and at least 40 million people get the flu every year despite mass vaccination (and theres no vaccine for the China virus). Do the math.