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Volume 14, Number 3—March 2008
Dispatch

Gastroenteritis Outbreak at Holiday Resort, Central Italy

Giacomo Migliorati*Comments to Author , Vincenza Prencipe*, Alessandro Ripani*, Cristina Di Francesco*, Claudia Casaccia*, Silvia Crudeli†, Nicola Ferri*, Armando Giovannini*, Maria Maddalena Marconi‡, Cristina Marfoglia*, Valeria Melai*, Giovanni Savini*, Giampiero Scortichini*, Primula Semprini*, and Franco Maria Ruggeri†
Author affiliations: *Istituto Zooprofilattico Sperimentale dell’Abruzzo and Molise “G. Caporale,” Teramo, Italy; †Istituto Superiore di Sanità, Rome, Italy; ‡Public Health Department of the Local Health Unit, Teramo, Italy;

Main Article

Table 2

Microbiologic analysis of water used within holiday resort, central Italy, case-control study, June–September 2003

Test Results, positive/no. samples examined (%)
Drinking water Non–drinking water* Swimming pool water
Microbial count at 36°C* 4/49 (8) 8/20 (40) 0/7
Microbial count at 22°C† 4/49 (8) 9/20 (45) 0/7
Clostridium perfringens‡ 0/49 5/20 (25) Not tested
Total coliforms§ 0/49 8/19 (42) Not tested
Escherichia coli 0/49 0/20 0/7
Enterococcii# 2/49 (4) 7/20 (35) 0/7
Pseudomonas aeruginosa** 9/49 (18) 5/20 (25) 1/7 (14)
Salmonella spp.†† 0/13 1/17 (6) 0/5
Vibrio cholerae‡‡ Not tested 0/9 Not tested
Coagulase-positive staphylococci
(S. aureus and other species)§§ Not tested Not tested 3/7 (43)
Norovirus antigen¶¶ Not tested 3/3 (100) Not tested

*Limit of acceptability: drinking water = 100 CFU/mL; swimming pool water = <100 CFU/mL.
†Limit of acceptability: drinking water = 100 CFU/mL; swimming pool water = <200 CFU/mL.
‡Limit of acceptability: drinking water = 0 CFU/mL.
§Limit of acceptability: drinking water = 0 CFU/100 mL.
¶Limit of acceptability: drinking water = 0 CFU/mL; swimming pool water = 0 CFU/100 mL.
#Limit of acceptability: drinking water = 0 CFU/100 mL; swimming pool water = 0 CFU/100 mL.
**Limit of acceptability: drinking water = 0 CFU/100 mL; swimming pool water = <1 CFU/100 mL.
††Limit of acceptability: drinking water = absent/100 mL;.swimming pool water = absent/100 mL.
‡‡Limit of acceptability: drinking water = absent/100 mL.
§§Limit of acceptability: swimming pool water = <1 CFU/100 mL.
¶¶Limit of acceptability: drinking water = sample volume examined.

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Page created: July 07, 2010
Page updated: July 07, 2010
Page reviewed: July 07, 2010
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