New modeling from The Australian National University looks at seven scenarios of how the COVID-19 outbreak might affect the world's wealth, ranging from low severity to high severity.

Four of the seven scenarios in the paper examine the impact of COVID-19 spreading outside China, ranging from low to high severity. A seventh scenario examines a global impact in which a mild pandemic occurs each year indefinitely.

But even in the low-severity model — or best-case scenario of the seven, which the paper acknowledged were not definitive — ANU researchers estimate a global GDP loss of $2.4 trillion, with an estimated death toll of 15 million. They modeled their estimates on the Hong Kong flu pandemic, an outbreak in 1968-1969 that is estimated to have killed about 1 million people.

In the high-severity model — modeled after the Spanish flu pandemic, which killed an estimated 17 million to 50 million globally from 1918 to 1920 — the global GDP loss could be as high as $9 trillion. In that model, the death toll is estimated to surpass 68 million.
https://www.businessinsider.fr/us/coronavirus-death-toll-global-gdp-loss-australian-national-university-study-2020-3?fbclid=IwAR2NEA6t4FtJvXeNWPqC3-BxqMOTXggVil1tHjlue4VqDzllGvpcXc2456U