1918 Pandemic Influenza Mortality, Chicago USA Prepared and edited by Steve E. Schacterle, Madhura S. Rane, and Kyra H. Grantz Last modified 10 November 2016 FID - unique point identifier pneumonia - 1 if pneumonia, 0 if influenza/unknown x(m), y(m) - point location of each death event, based on arbitrary projection of city of Chicago (i.e., does not map to longitude and latitude) week - beginning September 28, 1918, week that death was recorded