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The elderly and waterborne Cryptosporidium infection: gastroenteritis hospitalizations before and during the 1993 Milwaukee outbreak.

Naumova EN, Egorov AI, Morris RD, Griffiths JK - Emerging Infect. Dis. (2003)

Bottom Line: Before the outbreak, the rate of such events increased with age in the elderly (p</=0.001), suggesting that the elderly are at an increased risk.A pronounced second wave of these illnesses in the elderly peaked at 13 days.This wave represented approximately 40% of all excess cases in the elderly.

View Article: PubMed Central - PubMed

Affiliation: Department of Family Medicine and Community Health, Tufts University School of Medicine, Boston, Massachusetts 02111, USA. elena.naumova@tufts.edu

ABSTRACT
We used the Temporal Exposure Response Surfaces modeling technique to examine the association between gastroenteritis-related emergency room visits and hospitalizations in the elderly and drinking water turbidity before and during the 1993 Milwaukee waterborne Cryptosporidium outbreak. Before the outbreak, the rate of such events increased with age in the elderly (p

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Age-adjusted daily rates of gastroenteritis-related emergency room visits and hospitalizations per 100,000 elderly persons during the cryptosporidiosis outbreak (March 28, 1993–April 24, 1993) in three drinking water service areas (north, central, and south), Milwaukee, Wisconsin.
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Figure 2: Age-adjusted daily rates of gastroenteritis-related emergency room visits and hospitalizations per 100,000 elderly persons during the cryptosporidiosis outbreak (March 28, 1993–April 24, 1993) in three drinking water service areas (north, central, and south), Milwaukee, Wisconsin.

Mentions: The geographic distribution GIH events rates for the pre-outbreak period by zip code are shown in Figure 1. This spatial distribution of rates does not suggest any consistent spatial pattern. Before the outbreak, rates of GIH events in the elderly were similar in south, central, and north areas (Table 2). During the outbreak, rates of GIH events in elderly persons increased in all three water supply areas, but the increase was much stronger in the southern and central areas than in the northern area (Figure 2 and Table 2). The daily rate of GIH events in the elderly residing in the southern area during the outbreak was 2.6 times higher than in the northern area.


The elderly and waterborne Cryptosporidium infection: gastroenteritis hospitalizations before and during the 1993 Milwaukee outbreak.

Naumova EN, Egorov AI, Morris RD, Griffiths JK - Emerging Infect. Dis. (2003)

Age-adjusted daily rates of gastroenteritis-related emergency room visits and hospitalizations per 100,000 elderly persons during the cryptosporidiosis outbreak (March 28, 1993–April 24, 1993) in three drinking water service areas (north, central, and south), Milwaukee, Wisconsin.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC2957964&req=5

Figure 2: Age-adjusted daily rates of gastroenteritis-related emergency room visits and hospitalizations per 100,000 elderly persons during the cryptosporidiosis outbreak (March 28, 1993–April 24, 1993) in three drinking water service areas (north, central, and south), Milwaukee, Wisconsin.
Mentions: The geographic distribution GIH events rates for the pre-outbreak period by zip code are shown in Figure 1. This spatial distribution of rates does not suggest any consistent spatial pattern. Before the outbreak, rates of GIH events in the elderly were similar in south, central, and north areas (Table 2). During the outbreak, rates of GIH events in elderly persons increased in all three water supply areas, but the increase was much stronger in the southern and central areas than in the northern area (Figure 2 and Table 2). The daily rate of GIH events in the elderly residing in the southern area during the outbreak was 2.6 times higher than in the northern area.

Bottom Line: Before the outbreak, the rate of such events increased with age in the elderly (p</=0.001), suggesting that the elderly are at an increased risk.A pronounced second wave of these illnesses in the elderly peaked at 13 days.This wave represented approximately 40% of all excess cases in the elderly.

View Article: PubMed Central - PubMed

Affiliation: Department of Family Medicine and Community Health, Tufts University School of Medicine, Boston, Massachusetts 02111, USA. elena.naumova@tufts.edu

ABSTRACT
We used the Temporal Exposure Response Surfaces modeling technique to examine the association between gastroenteritis-related emergency room visits and hospitalizations in the elderly and drinking water turbidity before and during the 1993 Milwaukee waterborne Cryptosporidium outbreak. Before the outbreak, the rate of such events increased with age in the elderly (p

Show MeSH
Related in: MedlinePlus