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Volume 9, Number 4—April 2003

Research

The Elderly and Waterborne Cryptosporidium Infection: Gastroenteritis Hospitalizations before and during the 1993 Milwaukee Outbreak

Elena N. Naumova*Comments to Author , Andrey I. Egorov*, Robert D. Morris*, and Jeffrey K. Griffiths*
Author affiliations: *Tufts University School of Medicine, Boston, Massachusetts, USA

Main Article

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

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