Scientists are racing to identify the source of the coronavirus and several papers have been published purporting bats to be the primary host and pangolins to be the intermediate carrier.
Link to article: https://www.nature.com/articles/d41586-020-00548-w
Phyloepidemiologic analyses indicated the SARS-CoV-2 source at the Hua Nan market should be imported from other places. The crowded market boosted SARS-CoV-2 rapid circulations in the market and spread it to the whole city in early December 2019.
Link to Study: https://www.researchgate.net/publication/339351990_Decoding_evolution_and_transmissions_of_novel_pneumonia_coronavirus_SARS-CoV-2_using_the_whole_genomic_data