The deadliest outbreak in the world in history There’s no one outbreak of cholera to point to that’s on the level of any of the above five pandemics. However, since first spreading from Calcutta along the Ganges Delta in 1817, it has killed millions. Previous Next 1 2 3 4 5 6 7 8 9 10 11 12 2020-02-25 admin Share ! tweet