This is what happens when you have a “Zero-Covid” policy. As does Australia, New Zealand as well as we here in Hong Kong. This quarantine-free entry (already limited) was halted because of one case. So when can we ever open? The world won’t be without Covid in my lifetime, if ever. While other places, Europe, the UK, the US, are highly vaccinated and getting in with pretty normal life and largely quarantine-free travel for the vaccinated.
All of the zero Covid places have low vaccination rates.
ADDED: “Zero Covid” economies risk being overtaken. By John Power
Opening economies as much about politics as science. By Kok Xinghui and Dewey Sim