Volume 16, Number 4—April 2010
Use of Norovirus Genotype Profiles to Differentiate Origins of Foodborne Outbreaks
||Human surveillance, no. strains
||Bivalve monitoring, no. strains||Total no. strains|
|NA I.a||NA I.a||0||1||0||0||4||0||5|
|NA II.b||II.1, II.2, II.3||4||23||1||100||200||63||391|
*Poly, polymerase; cap, capsid; FB-food, foodborne-food, i.e., an outbreak was reported to be caused by food and the outbreak strain was detected in food; FB-feces, foodborne-feces, i.e., an outbreak was reported to be caused by food and the outbreak strain was detected in human feces only; FHB, food handler–borne, i.e., an outbreak was reported to be caused by an infected food handler contaminating the food and the outbreak strain was detected in human feces; PB, person-borne, i.e., an outbreak was reported to be caused by person-to-person transmission and the outbreak strain was detected in human feces; UN, unknown, i.e., the mode of transmission was not reported or was reported to be unknown and the outbreak strain was detected in human feces.
1Members of the Food-Borne Viruses in Europe Network: B. Böttiger, K. Mølbak, C. Johnsen (Denmark); K.-H. von Bonsdorff, L. Maunula, M. Kuusi (Finland); P. Pothier, K. Balay, J. Kaplon, G. Belliot, S. Le Guyader (France); E. Schreier, K. Stark, J. Koch, M. Höhne (Germany); G. Szücs, G. Reuter, K. Krisztalovics (Hungary); Ireland: M. Lynch, B. Foley, P. McKeown, S. Coughlan (Ireland); E. Duizer, A. Kroneman, Y. van Duynhoven (the Netherlands); K. Vainio, K. Nygard, G. Kapperud (Norway); M. Poljsak-Prijatelj, D. Barlic-Maganja, A. Hocevar Grom (Slovenia); F. Ruggeri, I. Di Bartolo (Italy); A Bosch, A. Dominguez, J. Buesa, A. Sanchez Fauquier, G. Hernández-Pezzi (Spain); K.-O. Hedlund, Y. Andersson, M. Thorhagen, M. Lysén, M. Hjertqvist (Sweden); D. Brown, B. Adak, J. Gray, J. Harris, M. Iturriza (United Kingdom).