Tuhia he tomokanga mō tēnei wāhanga - Ko te John Snow Memorandum, i tāngia ki "The Lancet", he whakautu nā ngā kairangahau 80 e whakahē ana i te huarahi ārai mate o te Great Barrington Declaration. I tapaina tōna ingoa ki a John Snow, te kairangahau mate uruta i mahi i te pakarutanga o te mate huka i Broad Street i te tau 1854
, e kī ana ko te ariā o te ārai mate o te kahui "he tinihanga mōrearea kāore i te tautokohia e te taunakitanga pūtaiao". E whakaae ana ko ngā herenga COVID-19 kua arahi ki te whakawātea, e ātaahua ai taua whakaaro, engari e kī ana "kāore he taunakitanga mō te ārai ārai ārai ki te SARS-CoV-2", e tāpiri ana "kaore te rautaki pēnei e arahi ki te mutunga o COVID-19, engari ka hua ki ngā mate uruta, pērā i te take o te maha o ngā mate hopuhopu i mua i te taenga mai o te kano ārai mate".