Also, even if it was an accidental release by china the situation
the world finds itself in is at least as much the US' (and much of the rest of its sphere of influence's) fault for the extremely poorly coordinated response to the situation last year. China at least did something about its domestic spread.
The US is a major global center of trade and travel, and in the end, much of the spread around the world is because there was basically no attempt to stop it from spreading through there.
All roads lead to Rome.