Volume 9, Number 4—April 2003
Research
The Elderly and Waterborne Cryptosporidium Infection: Gastroenteritis Hospitalizations before and during the 1993 Milwaukee Outbreak
Table 2
Daily rates of gastroenteritis-related emergency room visits and hospitalizations in the elderly by water supply area before and during the 1993 outbreak of cryptosporidiosis, Milwaukee, Wisconsin
Before outbreak | During outbreak | |||||
---|---|---|---|---|---|---|
Water supply area |
No. zip codes |
No. elderly |
No. cases |
Daily rate/ 100,000 |
No. cases |
Daily rate/ 100,000 |
North |
13 |
50,747 |
182 |
0.79 |
14 |
0.99 |
Central |
6 |
18,533 |
50 |
0.60 |
11 |
2.12 |
South | 15 | 61,165 | 213 | 0.77 | 44 | 2.57 |