There are three possible strategies:
1. Total lockdown to minimise fatalities. Will have to last at least a year until vaccine available (possibly). Untenable economically and probably unenforcable long term.
2. Let it rip - high death toll (UK>0.5m??), hospitals etc utterly overwhelmed, political suicide.
3. Lockdown now with gradual loosening to keep within the stretch capacity (just) of NHS. Effectively what is happening now - albeit with local capacity breaches (PPE, ITU beds, etc).
On the basis that the government stays with (3) I suspect foreign travel in 2020 will be a non-starter:
- no insurer will want to cover you
- most countries will have closed borders - risk of carrying infection
- unless you have immunity do you want to risk travelling
Only possibility will be if there is an antibody test with mandatory accompanying photo ID. Some countries may put mutually acceptable arrrangements in place - eg: Europe and US - but it won't happen quickly.
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