That's a very strong and very stupid claim.
The fact that WHO made the same claim and the fact that it's disputed by most actual experts around the world, hence ongoing travel restrictions, is a pretty good example of why there can't ever be one arbiter of 'truth' in a free society.
South Korea never banned travel.
Alright, show us some peer reviewed studies, preferably a meta-analysis, that shows it's stupid.
edit:sp
If they had started with the strong restrictions and then loosened it up after more information/debate/evidence of safety, then things would be better. But instead they let it go and claimed that "absence of evidence" is the same as "evidence of absence". Completely irresponsible. This is why the WHO's response to it is so infuriating.
No. There is no call for a "global travel ban". Are you deliberately misunderstanding what I am saying?
The call is (or better, it was, now is too late) for a restriction of mobility in the place of an outbreak, until they either "fizzle out" or are controlled/understood/resolved by development of treatment and/or vaccine.
If an outbreak is likely to "fizzle out", then the restriction will be for a short time and localized to the source and chances of spreading around the globe is reduced. And in case the outbreak is highly contagious like this one, an early and swift restriction would prevent the pandemic in the first place, or at the very least slow down things as much as possible to avoid exponential explosion of cases.
THAT IS THE KEY POINT! The WHO should be asking for an early local lockdown so that we wouldn't have to act later in a global one.