While they focused on the wet market that doesn't mean they would have ignored cases from people who didn't go there because they would have to identify cases f

While they focused on the wet market that doesn't mean they would have ignored cases from people who didn't go there because they would have to identify cases first and then find out where they were. At the time it simply wasn't feasible to check those near the wet market to see if they were infected. The focus was on the wet market before we had viable large scale testing. Only checking the wet market would only make sense in an immobile society.