Emerging Infectious Disease ISSN: 1080-6059
Volume 11, Number 1—January 2005
Research
Norovirus and Foodborne Disease, United States, 1991–2000
Figure 2

Figure 2. Norovirus-confirmed foodborne outbreaks by state, United States, 1998–2000 (N = 305).Years in parenthesis indicate first year a state public health laboratory developed molecular assays for norovirus (as of December 2001). *Includes District of Columbia.
1Efforts in 1998 to improve outbreak reporting resulted in more outbreaks being retrospectively attributed to this period. The current figures for 1993 to 1997 are 65 (2%) of 3,257 outbreaks attributable to NoV and 67% of unknown etiology.
New Flu Virus in Pigs Exhibited at Fairs in Ohio
Length: 11:58





