It’s social, not medical, science that tells us most about the disparate spread of this pandemic
Why does the late November map of the three-tier system in England look so much like a depiction of the north-south divide? In one sense, the explanation is simple: the tiers are principally set according to prevalence of the disease in each area and that is higher in much of northern England.
But why is the disease currently more common in the north? Why, in early autumn, were you more likely to be infected if you lived there? In part, this might be due to the seasonal nature of the virus and autumn comes first to the north. However, that does not explain why North Yorkshire and Cumbria are not now in the highest tier.
