First of all excuse me for any mistakes in my wrighting. I am not from America. I want everybody in the world to read this message.
The truth is that all industry was concentrated in China. Ozone layer is gone. The requarements for the level of air pollutions where pretty low. There are lots of viruses should be expected in this country.
If China won't make the seriouse actions for enviroment protection we get other sorts of viruses. It's predictable.
All the world has to make a desicion according to Chinese ecology.