Ka cika wannan jumla: John Snow, wanda ya kafa maganin sa barci, ya zauna a lamba 18 daga shekara ta 1852 zuwa mutuwarsa a shekara ta 1858. Ana daukar Snow a matsayin daya daga cikin iyayen ilimin cututtukan cututtukan zamani, a wani bangare saboda aikinsa na gano asalin cutar.
annobar kwalara a Soho, London, a shekara ta 1854.