▁of ▁the ▁risk ▁factors ▁for ▁H IV ▁transmission ▁and ▁how ▁to ▁prevent ▁its ▁spread . ▁Dr . ▁Pl um mer ▁was ▁the ▁first ▁to ▁reve al ▁that ▁heter osex ual ▁women ▁could ▁also ▁be ▁inf ected ▁with ▁H IV / A ID S ▁and ▁that ▁a ▁coh ort ▁of ▁N airo bi ▁sex ▁workers ▁had ▁a ▁natural ▁imm unity ▁to ▁H IV / A ID S . ▁This ▁latter ▁discovery ▁suggested ▁the ▁possibility ▁that ▁a ▁v acc ine ▁could ▁eventually ▁be ▁developed . ▁ ▁Dr . ▁Pl um mer ▁stepped ▁down ▁as ▁the ▁N ML ' s ▁Scient ific ▁Director ▁General ▁to ▁take ▁the ▁position ▁as ▁senior ▁advis er ▁to ▁the ▁Agency ' s ▁Chief ▁Public ▁Health ▁Officer ▁in ▁ 2 0 1 4 . ▁He ▁continues ▁to ▁be ▁a ▁distinguished ▁professor ▁at ▁the ▁University ▁of ▁Man it oba ▁and ▁a ▁Canada ▁Research ▁Chair . ▁ ▁In ▁ 2 0 1 5 , ▁Dr . ▁Matthew ▁Gil m our ▁became ▁the ▁Scient ific ▁Director ▁General ▁of ▁the ▁National ▁Micro bi ology ▁Labor atory ▁and ▁the ▁Labor atory ▁for ▁Food bor ne ▁Z oon oses . ▁Dr . ▁Gil m our ▁spe ar head ed ▁the ▁partners hip ▁that ▁brought ▁these ▁two ▁labor ator ies ▁together ▁under ▁the ▁National ▁Micro bi ology ▁Labor atory ▁um bre lla . ▁He ▁was ▁previously ▁the ▁Chief , ▁Enter ic ▁D ise ases ▁and ▁subsequently ▁the ▁Program ▁Director , ▁B acter i ology ▁and ▁Enter ic ▁D ise ases ▁at ▁the ▁N ML . ▁ ▁Dr . ▁Gil