<prompt> Pedzisa mutsara unotevera:  <response>: Kuputika kweSoho muLondon muna 1854 kwakaguma pashure pokunge chiremba John Snow aona pombi yomunharaunda yeBroad Street seyakasvibiswa ndokugombedzera vakuru vakuru kubvisa mubato wayo. Snow aidavira kuti mvura ine utachiona ndiyo yaiva honzeri yecholera, panzvimbo pezvinenge zviri mumhepo zvinonzi miasmata. Kudzidza kwake kwakaratidza kuti mvura yakasvibiswa ndiyo yainyanya kuparadzira korera, kunyange zvazvo asina kuziva chinhu chakasvibisa. Kunyange zvazvo Filippo Pacini akanga aronga Vibrio cholerae sechinhu chinokonzera korera gore iroro, kwaizova nemakore akawanda dzidziso yechiasma isati yazivikanwa. 