Yes, if they were finished engineering it. Not looking up the actual number, but China has had accidental releases from their level 4 facilities in the past, SARS. Fortunately they were quickly quarantined and nothing came of it.
May have been the MO this time, just this bug is highly contagious and camouflages itself. People carry and spread it without having symptoms. Which is one of the main reasons I feel it’s engineered.
Are you saying SARS was engineered? I wasn't aware of that.