We have a well accepted value range of the spending required to save a life when evaluating public safety infrastructure projects, which is about $2-5m. It& #39;s noticeable that the Downer "restart now" types never try and run the BCA on that basis - because it ain& #39;t on their side.
Doing some very quick and dirty work, if you take the Diamond Princess mortality rate of 2% and assume the disease reaches 100% of the population in a "herd immunity" style, then the approximate economic damage is about 100% of GDP. Which is generally considered "quite a lot".
If we& #39;re being a lot more charitable, we can take the lowest mainstream estimates of about 0.5% mortality, and assume herd immunity involves a 70% infection rate. Then the economic damage *solely due to the immediate cost in lives lost* for Australia is 20% of GDP.