I saw a rumor about a week ago that the virus was released during a vehicle accident. Military vehicles were transporting the virus in containers, wrecked, the virus was released, and in addition, witnesses/bystanders managed took off with some of the containers. Military people involved were executed, per the rumor.
Big part of the problem is zero reliable accurate info. First of all the Chinese internet firewall. Second, Chinese culture makes the entire population of China a bunch of complete liars.
We were stupid to put all our eggs in the Chinese basket, and we're having to learn our lesson the hard way.