NoroSTAT is a network of state health departments and CDC that provides near real-time reporting and monitoring of norovirus outbreak activity. The data is used to track current norovirus activity, better understand outbreaks, and make recommendations to prevent future outbreaks.

CaliciNet is a national norovirus outbreak surveillance network. Its database is used by public health laboratories to submit genetic sequences of norovirus strains associated with gastroenteritis outbreaks, and epidemiological data from outbreaks. The norovirus strains can be compared with other strains in the database, helping CDC link outbreaks to a common source, monitor circulating norovirus strains, and identify newly emerging norovirus strains.