William Farr
Person
William Farr joined the new General Register Office in England in 1839 and built the national system for recording causes of death, including an early classification of diseases. He used the figures to compare death rates between places and occupations, showing the toll of poor sanitation. He collaborated with Florence Nightingale, and after initially favouring the miasma theory, his 1866 analysis helped confirm water as cholera's route.
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