Earlier quoted context omitted.
I wonder if this pandemic will have long lasting effects on international travel. It seems possible that going into the future stricter health screening may become routine and certain travel restrictions may stay in place for a prolonged period of time. Same goes for certain other measures I guess.
Not that long lasting, at least for country/continental blocks. As soon as vaccines are widely available, I'd expect that the only thing that remains from the corona crisis is a visa/immigration requirement of proof of vaccination/immunity.
However, a hypothesis that international travel is the major enabler reduces this to more of a 1 in 20 year event (SARS, MERS, Ebola, etc, etc all were near misses that were a little less slippery). Swine flu was also pretty bad.
We might be able to afford this once a century. We can't afford to do this once every 20 years. It is quite possible that it makes economic sense to permanently cripple international travel by introducing mandatory 2-week quarantines on arrival or somesuch.