<prompt> Pedzisa mashoko anotevera: Mugore iroro, chiremba wokuBritain anonzi John Snow, uyo aishanda mune imwe nharaunda yeLondon ine urombo, akaona kuti mvura yakasvibiswa ndiyo yaipararira chirwere chacho. Mushure mokunge  <response>: 1854 Kupararira kwechirwere checholera muBroad Street akanga aronga mamiriro ezvinhu ekorera munharaunda yeSoho muLondon, uye akacherechedza boka rematambudziko pedyo nepombi yemvura mune imwe nharaunda. Kuti aone kana zvaaitaura zvaiva zvechokwadi, akanyengetedza vakuru vakuru vacho kuti vabvise pombi yacho, uye nhamba yevanhu vaiva nekorera munzvimbo yacho yakaderera pakarepo. Kubudirira kwake pakupedzisira kwakabatsira kudzora denda racho. Snow aiva mumwe wevakatanga sangano rinonzi Epidemiological Society of London, rakaumbwa pakatanga chirwere chekorera muna 1849, uye anonzi ndiye akatanga nyaya dzezvirwere. 