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Volume 8, Number 6—June 2002
Research

Waterborne Outbreak of Norwalk-Like Virus Gastroenteritis at a Tourist Resort, Italy

Della Boccia*Comments to Author , Alberto Eugenio Tozzi*, Benvon Cotter*§, Caterina Rizzo†, Teresa Russo‡, Gabriele Buttinelli*, Alfredo Caprioli*, Maria Luisa Marziano*, and Franco Maria Ruggeri*
Author affiliations: *Istituto Superiore di Sanità, Rome, Italy; †University of Bari, Bari, Italy; ‡Local Health Unit, Montalbano Jonico, Matera, Italy; §European Programme for Intervention Epidemiology Training (EPIET), Rome, Italy;

Main Article

Table 3

Attack rates and relative risks according to usual behaviors and activities of staff members, tourist resort, Italy, July 2000

Exposure No. (n=69) No. exposed Attack rate (%) Relative risk 95% CI a
Shower on the beach 22 14 63.6 1.8 1.2–2.6
Swimming in the pool 45 22 48.9 1.4 0.9–2.0
Drinking tap water 104 47 45.2 1.4 0.9–2.2
Drinks with ice 128 55 43.0 1.8 1.0–3.2
Swimming in the sea 72 31 43.0 1.2 0.8–1.7
Eating at resort restaurant 159 64 40.2 1.5 0.5–3.9
Eating ice cream 140 56 40.0 1.1 0.6–1.9
Eating meat 151 60 39.7 1.2 0.6–2.4
Eating salad 123 48 39.0 1.0 0.6–1.6
Eating fruit 139 54 38.8 1.0 0.6–1.8
Eating pasta 142 55 38.7 1.2 0.6–2.1
Consuming drinks on draught 91 35 38.5 1.0 0.7–1.4
Eating fish 112 40 35.7 0.7 0.5–1.1
Eating seafood 85 28 32.9 0.7 0.5–1.1

aCI, confidence interval.

Main Article

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Page updated: July 16, 2010
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