<prompt> Qedela umusho olandelayo: Le ndawo iyaphawuleka ngokuba nekholera  <response>: ukuqubuka kwalesi sifo ngo-1854 okwaholela ekusetshenzisweni ngokushesha kwezimiso eziyisisekelo zezifo eziwumshayabhuqe ukuze kuxazululwe le nkinga. UJohn Snow, udokotela owabona ukuthi amacala ayegxile eduze kwepompo eseBroad Street waveza okutholakele esithombeni esisekelwe ebalazweni. Kwaholela ekutheni ipompo livalwe futhi ukwehla kwamacala ekholera kwaba okusheshayo. 