Volume 9, Number 4—April 2003
Research
The Elderly and Waterborne Cryptosporidium Infection: Gastroenteritis Hospitalizations before and during the 1993 Milwaukee Outbreak
Figure 4

Figure 4. The temporal exposure response surface plot of the lagged association between daily rate of gastroenteritis-related emergency room visits and hospitalizations in the elderly in south and central water supply areas of Milwaukee, Wisconsin (per 100,000) and water turbidity (Nephelometric Turbidity Units) at the south plant.