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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;

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Table 2

Attack rates and relative risks for staff members (n=69) according to type of work, tourist resort, Italy, July 2000

Type of work Attack rate (%) Relative risk 95% CI a
Kitchen staff 4/34 (11.8) Referent
Office staff 3/14 (21.4) 1.8 0.5–7.1
Bar staff 3/11 (27.3) 2.3 0.6–8.8
Shop assistant 7/21 (33.3) 2.8 0.9–8.5
Cleaning staff 16/36 (44.4) 3.8 1.4–10.2
Sports trainers and entertainers 19/37 (51.4) 4.4 1.6–11.5
Waiters 17/28 (60.7) 5.2 2.0–13.6

aCI, confidence interval.

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