historyThe Public Domain Review1665 · London

London's 1665 plague deaths were counted by poor older women paid per body

the gist

In 1665 London's parishes published weekly bills of mortality listing the causes of death. The counts came from searchers of the dead, poor and often older women with no medical training, who examined bodies and reported what they thought had killed them. They were paid per body, and their contact with infected corpses often shortened their own lives. The bills, sold for a penny, were meant to show citizens where plague had spread, and they were part of a system introduced in 1592 to track and quarantine the disease. The bill for the week of 19 to 26 September 1665 recorded 7,165 plague deaths, though historians think the true count was higher because some groups were not recorded. Many listed causes, such as planet, suddenly or griping in the guts, were vague or astrological.

so what

The bills were the basis of early statistical thinking: John Graunt used them in 1662 to analyse mortality, one of the first systematic studies of population data. They show how public health depended on rough, human-collected data long before modern medicine.

fun fact

John Graunt used London's bills of mortality to produce one of the earliest systematic studies of population statistics.

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