Granted. That's why they would try to segregate by ethnicity. (Besides, they think we're just round-eyed barbarians.)
China has a large number of ethnicities. As of late, they have more social classes than ever before. The middle class is less restless - since they are the ones winning in the current system. The uneducated agricultural class in China is also the one raising Hell with the government. They're the ones being executed by firing squads. They're also the ones dying from this outbreak - not the middle or upper class.
Also, this is moving to both Russia and India. The geographical area covered is HUGE. The numbers we're seeing are just a minute sampling of what's actually going on there - you can be sure of that.
It's probably safe to say that the underground church there is considered a very serious threat to the 'revolution' too.