At the end of the 1810s, worrying reports began to emerge from Asia: a dreaded plague called cholera had begun to move out of its old territory around the Ganges delta. Just a decade later, it was clear that the disease was headed for Europe. People everywhere began to wonder how to protect themselves from the plague - a plague that seemed to kill everything in its path, and was completely new to the European medical profession. Did it spread from person to person? Or was it bad air, and more a matter of dirt and lack of morals that made people sick and dead? Did the quarantines not help? What steps were actually taken at a time when the existence of bacteria was not known? In this book, we follow the fight against cholera from a Swedish perspective. How they tried to build up protection, how the cholera nevertheless broke in, what was done once the cholera had gained a foothold, the debates about the quarantines, who died, what the care looked like and, not least, what ideas formed the basis for all this. The focus is on the first, most devastating epidemic in 1834, and for the first time in this book, the pathways of cholera have also been mapped in detail using GIS technology. Were some areas of the country worse affected than others? How did the plague actually spread?