CaliciNet is a national norovirus outbreak surveillance network of federal, state, and local public health laboratories in the United States.  CDC launched CaliciNet in 2009 to collect information on norovirus strains associated with gastroenteritis outbreaks in the United States. Public health laboratories electronically submit laboratory data, including genetic sequences of norovirus strains, and epidemiology data from norovirus outbreaks to the CaliciNet database.

 To learn more about this program click here.



As of August 2018, 34 laboratories in 29 states and the District of Columbia have been certified to participate in CaliciNet. Laboratories that are not certified can submit outbreak specimens for norovirus typing to one of the five CaliciNet Outbreak Support Centers (CN-OSCs) or to CDC’s National Calicivirus Laboratory.

The Tennessee State Public Health Laboratory is a CaliciNet Outbreak Support Center for ten plus years. On average, they process 30 out-of-state requests for specimen testing.