Key points
- CDC established the Norovirus Sentinel Testing and Tracking (NoroSTAT) network in August 2012.
- Through NoroSTAT, CDC combines a subset of the NORS and CaliciNet data from the 14 participating states with standardized reporting.
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Last updated: November 24, 2025
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Reporting Outbreak Data Through NoroSTAT
- During an outbreak, people get sick from norovirus.
- State, local, and territorial health departments are notified of outbreak.
- NoroSTAT-participating health departments report data within 7 business days of outbreak notification.
- Health departments begin investigation and collect and test specimens.
- Health departments report data through CaliciNet and NORS.
- Lab data reported to CaliciNet and integrated into NoroSTAT. Only CaliciNet-certified labs upload genotype information into CaliciNet database.
- Aggregate clinical data and epidemiological data reported to NORS.
- CaliciNet data linked to NORS to provide genotype information.
- NoroSTAT is a network of 14 participating state health departments with standardized reporting: CO, MA, MI, MN, NE, NH, NM, NC, OH, OR, SC, TN, VA, and WI
- For NoroSTAT, CDC combines a subset of the NORS and CaliciNet data from the 14 states.
- CDC oversees data verification, timely data analysis, and data dissemination.
- NoroSTAT data are disseminated online at https://www.cdc.gov/norovirus/php/reporting/norostat-data.html.
