By the time the case definition requirement for a link to the market was removed (Jan 18, 2020), nearly 200 cases had been confirmed. This is not including the number of cases that were suspected/clinically diagnosed.
The 174 cases with onset in Dec 2019 considered by Worobey et al. include both confirmed cases and clinically diagnosed cases. Therefore, most, if not all, of these cases had been identified using the criteria that the patients had to either be linked to the market or, if unlinked to the market, have been identified at hospitals near the market or in the neighborhood of the market.
The 174 cases with onset in Dec 2019 considered by Worobey et al. include both confirmed cases and clinically diagnosed cases. Therefore, most, if not all, of these cases had been identified using the criteria that the patients had to either be linked to the market or, if unlinked to the market, have been identified at hospitals near the market or in the neighborhood of the market.
See: https://archive.ph/LVU6z
See also: https://twitter.com/gdemaneuf/status/1500593644428214272