Dhameystir weedha soo socota: Dhakhtarka Ingiriiska John Snow wuxuu isticmaalay jaantus Voronoi oo kale ah sanadkii 1854 si uu u muujiyo sida dadka intooda badani u dhinteen
Cudurka shuban biyoodka ee ka dilaacay Broad Street wuxuu ku noolaa meel u dhaw mashiinka biyuhu ka daadanayaan ee Broad Street.