Meissa Appoints Robert Walker, M.D., Chief Medical Officer August 3, 2021 San Francisco Biotechnology Network News News Comments Off on Meissa Appoints Robert Walker, M.D., Chief Medical Officer REDWOOD CITY, Calif.--(BUSINESS WIRE)-- #COVID19--Former CMO of BARDA, who provided clinical development support to Operation Warp Speed, joins Meissa Vaccines as Chief Medical Officer. Click to view original post