<prompt> Bhala ukuqhubeka kwalesi sigaba - iBroad Street yayidume kabi njengendawo yokuqubuka kuka-1854  <response>: yesifo sekholera. UDkt. uJohn Snow walandelisa ukuqubuka kwalesi sifo empompini yamanzi yomphakathi esemgwaqweni, futhi wayikhubaza. Ngaphambi kwalesi sikhathi, kwakucatshangwa kabanzi ukuthi lesi sifo sasibangelwa i-miasma edluliselwa ngomoya; okutholakele kukaSnow kwabonisa ukuthi sidluliselwa ngamanzi. 