This is by no means a jolly read - with vivid stories, Liz Kalaugher takes us into the world of zoonotic diseases, both where humans are infected by largely wild animal diseases and where we spread disease among other species.The book voyages around the world and into the prehistoric past (entertainingly in a chapter that begins at Bristol bus station, the way all prehistory stories probably should), suggesting that perhaps the Neanderthals were wiped out by a lack of disease resistance. Kala...