China has problems. They have essentially zero natural immunity, their vaccines aren't very good, and Omicron spreads really well. So well masks aren't even close to enough. Once contact tracing is overwhelmed, China will have to do large-scale lockdowns on-and-off for a while.
The optimist in me wants to believe omicron is a sign of things to come; more infectious but less deadly variants we can largely ignore like the common cold. But what's preventing another variant emerging that's both more infectious and more deadly after ripping through one of the less vaccinated nations? The lethality aspect seems somewhat random from where I'm sitting, not an expert.
This isn’t true. Wearing masks when sick has only been common in East Asia since SARS and that’s the only region it was common in. It’s not universal there either. There was an irritated comment in my office Friday about someone sneezing who didn’t never his mouth, never mind wearing a mask.
Possibly wearing a mask will be normalized in Western countries after this is over but I sincerely doubt people in the Congo or Malawi or Guatemala are wearing masks while sick. Lots of people and countries are dirt poor.