In EcoHealth Alliance's research grant from the NIH which spanned 2014-2019, they report the following in their progress report:

"In collaboration with Ralph Baric (UNC), we used the SARS-CoV reverse genetics system to generate a chimeric virus with a https://t.co/I3wfhFl0bb… pic.twitter.com/f64CT9UCER

— Chief Nerd (@TheChiefNerd) March 21, 2023