London Fog: A Century of Pollution and Mortality, 1866-1965
NBER Working Paper No. 24488
This study provides new evidence on the impact of air pollution in a high-pollution high-mortality setting: London over the century from 1866-1965. I identify pollution effects by comparing detailed new weekly mortality data to the timing of London's famous fog events, which trapped emissions in the city. My results show that acute pollution exposure due to fog events accounted for at least one out of every 200 deaths in London during this century. I also provide the first well-identified evidence that the presence of two infectious diseases of the respiratory system, measles and tuberculosis, increased the mortality effects of pollution. As a result, success in reducing the disease burden in London in the 20th century lowered the impact of pollution exposure and shifted the distribution of pollution effects across age groups. These interactions have implications for developing countries, where both diseases remain important.
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Document Object Identifier (DOI): 10.3386/w24488