Category
page 1Spatial epidemiology
John Snow
English epidemiologist and physician (1813–1858)
health geography
application of geographical methods to the study of health and disease
1854 Broad Street cholera outbreak
Severe outbreak of cholera that occurred in London in 1854

disease cluster
group of occurrences of illness or health conditions in proximity by time or location
cancer cluster
type of disease cluster
Stroke Belt
region in United States