There are only 2 possibilities.
First that the virus ‘jumped’ from animal to human in that market or it’s close surrounds. This means that the original infected animal will not be solitary - there has to be more than one such animal since by nature a virus will continue to infect if unchecked and nobody has either identified or checked this virus in the animal kingdom.
Therefore in this case there remains the possibility of renewed ‘jumping’ from infected animals - The Chinese Govt say they have shut down the wet markets thus reducing this risk.
Possibility 2 is that the virus escaped from a lab - in such case there are no infected animals and eliminating the virus by a combination of immunity and vaccine will ensure it’s demise.
Strangely this second scenario is slightly more reassuring.
My own hunch is that both scenarios are the same, the leak from the lab finding a natural home in the market - just a hunch.
Another hunch is that the leak was reported to the local authorities who sat on it with a wait and see - when a local hospital doctor spotted a sars like virus and warned his colleagus in a group chat all the group were taken in and given written warnings about ‘spreading alarm’.
How come the local authorities knew so quickly? - that’s the wait and see - they were clearly monitoring for any mention of the word virus.
What happened the local authorities when the info reached Bejing - they were all sacked.
What happened the young doctor who was brave enough to show his warning letter on the internet - he died.
Just a hunch - likely the world will never know.