UnseenEnemyisanessentialexplorationofreasons21stcenturypopulationsareexperiencingarashofdiseasesthatwereonceonlyoutbreaks,buthavenowbecomefullblownepidemicsThisincreasedriskthatweface,andthewayssocietyandindividualscanworktogethertoreducethatrisk,areexplainedtothepublicthroughthecasestudiesofthreeepidemics:Ebola,influenzaandZikaMovingacrosstheglobe,wemeetdoctors,diseasedetectivesandeverydaypeoplewhohavesteppedintothehorrorofanepidemicandemergeddeeplychangedEpidemicsbringoutthebestandworstofhumanbehavior,witheffectsreachingfarbeyondthetollsofsicknessanddeath