In most countries the old are more likely to get vaccinated. In Hong Kong the old are far less likely to get vaccinated. As a result:

This FT article has the full story. China might be next, as they also have a huge number of unvaccinated old people. Not as many as HK in relative terms, but a vast number in absolute terms.
A couple of other points. In the past, I had commenters telling me that the Covid fatality rate in East Asia was lower than in the West for some sort of mysterious reason unrelated to behavior. We now know that’s false. Right now, the rate of Covid deaths in Hong Kong is really bad.

I also had commenters denying the effectiveness of vaccines, LOL.
I’m really worried about China, which just had its first two deaths in 14 months. Many more may soon follow.