This article and links may help you.
https://www.sciencedirect.com/science/article/pii/S2590053619300308
https://www.axios.com/timeline-the-early-days-of-chinas-coronavirus-outbreak-and-cover-up-ee65211a-afb6-4641-97b8-353718a5faab.html
https://www.businessinsider.com/early-coronavirus-cdc-tests-distinguish-covid-water-2020-3?r=DE&IR=T
they were all links in a long post by another anon a while back…If they prove useless for you, sorry about that..