definiens: means a scientific or medical representative who ( i ) is primarily focused on infectious diseases and therapeutic areas related thereto in the Terri tory, ( ii ) has relevant clinical experience and sufficient health care experience ( including at least a four - year deg ree and clinical, residency or fellowship experience or oth er highly specialized training relevant to Medical Affairs Program activities, including any such professional with a Ph.D., Pharm . D. or M.D. degree ) to engage i n in - depth dialogues with physicians regarding medical i ssues associated with the Product, ( iii ) is employe d by a Party or any of its Affiliates on a full - time basis, and ( iv ) is not a Sales Representative or otherwi se engaged in direct Promotion of the Product . For clarity, ( a ) C ubist Medical Affairs Representatives would include [COMPANY] Clinical Scientific Directors ( CSDs ) and ( b ) Optime r Medical Affairs Representatives would include Opt imer Medical Education Research Liaisons ( MERLs )