Tuhia he tohutoro mō tēnei wāhanga - I noho a John Snow, te pionia o te rongoā whakamate, ki te nama 18 mai i te tau 1852 tae noa ki tōna matenga i te tau 1858. E kiia ana ko Snow tētahi o ngā matua o te mātauranga pāwera o nāianei, nā te mea i ārahi ia i te pūtake o te pakarutanga o te mate pukupuku i Soho, i Rānana, i te tau 1854
He aha?