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Volume 13, Number 1—January 2007

Dispatch

Gastroenteritis Caused by Norovirus GGII.4, the Netherlands, 1994–2005

J. Joukje Siebenga*†Comments to Author , Harry Vennema*, Erwin Duizer*, and Marion P.G. Koopmans*†
Author affiliations: *National Institute for Public Health and the Environment, Bilthoven, the Netherlands; †Erasmus University, Rotterdam, the Netherlands;

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Table

Outbreaks of gastroenteritis caused by noroviruses per mode of transmission and setting, the Netherlands, 1994–2005*

Genotype Mode of transmission per genotype, no. (%)
Setting per genotype, no. (%)
MW F PTP U/O Total T S/D R/C/C H PH RI U/O Total
GGI + IV 1 (50) 5 (11) 7 (3) 23 (5) 36 3 (25) 3 (9) 9 (16) 4 (3) 2 (67) 10 (2) 5 (11) 36
GGII.4 0 18 (39) 163 (73) 291 (69) 472 7 (58) 11 (34) 20 (36) 91 (74) 1 (33) 316 (74) 26 (58) 472
GGIInon4 0 14 (30) 33 (15) 58 (14) 105 2 (2) 10 (31) 16 (29) 17 (14) 0 55 (13) 5 (11) 105
Mixed 1 (50) 3 (7) 4 (2) 10 (3) 18 0 4 (13) 2 (4) 3 (2) 0 6 (1) 3 (7) 18
Unknown 0 6 (13) 17 (8) 41 (10) 64 0 4 (13) 8 (15) 8 (7) 0 38 (9) 6 (13) 64
Total 2 (100) 46 (100) 224 (100) 423 (100) 695 12 (100) 32 (100) 55 (100) 123 (100) 3 (100) 425 (100) 45 (100) 695

*MW, mainly waterborne; F, foodborne; PTP, person-to-person; U/O, unknown or other; T, travel associated; S/D, school or daycare center; R/C/C, restaurant, canteen, or caterer; H, hospital; PH, private house; RI, residential institution.

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