Volume 17, Number 8—August 2011
Dispatch
Specimen Collection and Confirmation of Norovirus Outbreaks1
Figure 2

Figure 2. Percentage of outbreaks confirmed as norovirus (line), by number of specimens tested, Oregon, USA, August 1999–January 2007.
1Preliminary report presented at the 2004 International Conference on Emerging Infectious Diseases, February 29–March 3, 2004, Atlanta, Georgia, USA (abstract no. 244).