This study uses geographic information systems (GIS) to measure the incidence and
track the spread of the influenza pandemic of 1918 in Hartford, Connecticut. The
data for the study are based on the death certificates of individuals who lived
in Hartford and died from the disease, digitized maps of Hartford for the period
circa 1918, and two supplemental random samples of the 1920 U.S. census
schedules. The findings suggest that, instead of viewing the epidemic as a
solitary event, one can better understand it as a set of somewhat discrete
events or “mini-epidemics” occurring within the confines of one
city. These mini-epidemics affected various subgroups in the population
differently in terms of the timing of the onset, the duration, and the lethality
of the disease. The major point of differentiation of these subgroups was
ethnicity, which overlapped with geography.