The longer the borders are left open, the less likely there is to be any gain in closing borders.
If there's no gain to closing borders, then international trade continues without serious interruption.
Of course there's a gain in closing borders, since you can get the corona more than once, you can get it again right after getting diagnosed clean, you don't want to load hordes of infected leeches after hordes of infected leeches, especially when hospitals are overloaded
You're just trying to push a lame narrative here nothing more. Reality on the ground contradicts your assumption https://www.dw.com/en/coronavirus-italy-towns-in-lockdown-after-covid-19-deaths/a-52477823
https://www.cnbc.com/2020/01/30/coronavirus-russia-closes-border-with-china-to-prevent-spread.html
>Get Ready for Closed Borders and Crashing Markets
https://www.businessinsider.com/hungary-greece-closing-borders-asylum-seekers-coronavirus-2020-3
https://www.newsweek.com/china-neighbors-close-borders-coronavirus-sars-1484978
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