Sorry to sound not PC and cold, but to make public more understanding, this would be a good analogy.
Every country is a different lawn, with its own unique situation.
Africa? Always short even without mowing.
West? Mowed numerous times in summer.
China, no mowing at all through summer and plants growing crazy!
It’s sad to see China now like this. Al I always suggested, China should have tried open hainan long time ago. Similar things would have happened and might persuade weak and elderly to take vax.