M. Michelle Berrey, M.D., M.P.H. has been appointed president and chief executive officer of Chimerix, Inc. Dr. Berrey will continue to serve as chief medical officer. Dr. Berrey succeeds Kenneth I. Moch, who has resigned to pursue other interests.   Prior to joining the company, Dr. Berrey served as chief medical officer at Pharmasset, Inc. since 2007, a company focused on the development of nucleotide analogs for the treatment of hepatitis C, until its acquisition by Gilead Sciences, Inc. in J...