[standardsam]

"the model that shut down the world economy"

The model was released on the 16th of March. Large parts of the world had already "locked down" prior to this date.

edit: of course there is no doubt this model was influential in other countries' decision to lock down.

[ImaCake]

Australia's influenza modelling had plans for this style of lockdown prepared long before the 'rona hit. So you are right, this model did not shut down the global economy. If anything did, it was China's demonstration that such a lockdown could actually work.

[lbeltrame]

To be fair, not all of China locked down as hard as the Hubei province.