Table 1.

Overview of COVIS and FoodNet

	COVIS	FoodNet
Year Started	1988	1996
Type of Surveillance	Passive	Active
Reporting states	1988: Gulf Coast states only (Alabama, Florida, Louisiana,  Mississippi, Texas)	California, Connecticut, Georgia, Minnesota,  Oregon, then added Colorado (2001),  Maryland (1998), New Mexico (2004),  New York (1998), Tennessee (2000)
	1988–2006: Gulf Coast states and voluntary reporting from  other states
	2007: Nationally notifiable and all 50 states reporting
Variables captured
Demographic	Age, sex, race, ethnicity, occupation	Age, sex, race, ethnicity
Isolate	Species, isolates (all), and specimen source	Species, isolate (most invasive only),  and specimen source
Clinical	Symptoms, hospitalization, sequelae, death, antibiotic  treatment, preexisting conditions, and medications	Hospitalization, patient outcome
Epidemiologic	Travel, seafood consumption, and recreational water  exposure	Travel history, outbreak status
Seafood   investigation	Seafood trace back	Not applicable

Abbreviations: COVIS, Cholera and Other Vibrio Illness Surveillance; FoodNet, Foodborne Diseases Active Surveillance Network.