TABLE 2.

Norovirus GII-4 variants detected in the study

DateNo. of outbreaks detectedNo. of outbreaks tested (%)No. of norovirus GII-4 variants detectedNot typed
v3v4v5v6
January 20053215 (46%)114
February 20051610 (62%)91
March 2005299 (31%)81
April 2005258 (32%)8
May 2005186 (33%)33
June 200595 (55%)5
July 200530
August 200543 (75%)3
September 200553 (60%)21
October 200531 (33%)1
November 200562 (33%)11
December 2005155 (33%)41
January 2006217 (33%)61
February 20061810 (55%)81
March 20064936 (73%)11241
April 20063622 (61%)319
May 2006236 (26%)15
June 2006105 (50%)5
July 200633 (100%)3
August 200675 (71%)5
Total332160 (48%)84631111