**This review does NOT contain spoilers for Parasite.** Imagine me standing in a hallway banging my head against a wall. Now picture my face, I'm weeping and mumbling something over and over again. I'm mumbling 'read Mira Grant you fools, you fools, you fools' in time to my head hitting the wall. What I'm trying to say is that I'm desperate to understand why on of the best authors I've ever read seems so widely unread. Symbiont is absolutely fantastic. I get that books about what is functionally the zombiepocalypse outbreak (they aren't technically traditional zombies but for all intents and purposes they act like them) aren't for everyone but there is so much more going on here than some seriously bananas apocalypse business. This book is about what it means to be a person and what it means to be a monster. I've probably rambled about this before but one of my favorite things about mad science stories are the myriad of philosophical and ethical issues you can weave into them and