Unit4HistoricalFigures心灵鸡汤心灵鸡汤JohnSnowJohnSnowwasbornonMarch15,1813,inthecityofYork,England.Asaboyheprovedtobeabrightstudent,sohismothersenthimtoaprivateschool,whereheexcelled.Snowplannedtobecomeaphysician,andatfourteen,hewasapprenticed(使某人当学徒)toDr.WilliamHardcastleinNewcastle-upon-Tyne.Snowhadananalyticalmindthatpaidattentiontodetailsthatothersoftenignored.Duringhisearlyyearsasanapprentice,hefillednotebookswithhisthoughtsandobservationsonscientificsubjects.DuringtheLondoncholeraepidemic(流行霍乱)of1831~1832,hebecameastudentattheSchoolofMedicineinGreatWindmillStreet,London.Aftertwoyearsofschooling,hewasacceptedasamemberoftheRoyalCollegeofSurgeonsofEngland.Snowwasabelieverinthegermtheoryofcholera.In1849Snowwroteabook“OntheModeofCommunicationofCholera,”inwhichhesuggestedthatthe“cholerapoison”wasspread(传播)throughthepollutionoffoodorwater.Thistheoryshouldbeagainstthemorecommonlyacceptedideathatcholera,likealldiseases,multipliedintheair,andacloudofdangerousgasfloatedarounduntilitfounditsvictims.OnApril7,1853,heusedchloroform(三氯甲烷,旧时医用麻醉剂)toQueenVictoriaatthebirthofhereighthchild,PrinceLeopold.Anditwasn’tuntil1854,whencholerastruckEnglandonceagain,thatSnow’sargumentthatcholerawasspreadthroughpollutedfoodorwaterwasrecognized.Forhiseffortstodeterminehowcholerawasspreadandforthestatisticalmappingmethodsheused,JohnSnowiswidelyconsideredtobethefatherofmodernepidemiology.