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Volume 10, Number 3—March 2004

Research

Internet Use and Epidemiologic Investigation of Gastroenteritis Outbreak

Markku Kuusi*Comments to Author , J. Pekka Nuorti*, Leena Maunula†, Ilkka Miettinen‡, Hannu Pesonen§, and Carl-Henrik von Bonsdorff¶
Author affiliations: *National Public Health Institute, Helsinki, Finland; †Helsinki University Central Hospital Laboratory Diagnostics, Helsinki, Finland; ‡National Public Health Institute, Kuopio, Finland; §Environmental Health Unit, Nurmes, Finland; ¶Helsinki University, Helsinki, Finland

Main Article

Table 2

Factors associated with gastroenteritis among residents of municipality A, Finlanda

Exposed Not exposed
Risk factor
Ill
Total
AR (%)
Ill
Total
AR (%)
RR
95% CI
Any unboiled tap water
299
460
65
20
48
42
1.6
1.1 to 2.2
Unboiled tap water at home
251
366
69
19
54
35
2.0
1.4 to 2.8
Unboiled tap water outside home
240
347
69
50
112
45
1.6
1.3 to 1.9
Well water only 4 17 24 145 204 71 0.3 0.1 to 0.8

aAR, attack rate; RR, relative risk; CI, confidence interval.

Main Article

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