Interactive Dashboard

At a glance

The National Respiratory and Enteric Virus Surveillance System (NREVSS) is a laboratory-based system that monitors respiratory and enteric virus activity.

The National Respiratory and Enteric Virus Surveillance System (NREVSS)

Overview

The National Respiratory and Enteric Virus Surveillance System (NREVSS) monitors viral activity in the United States. In this surveillance system, participating U.S. laboratories voluntarily report weekly to CDC the total number of tests performed to detect these viruses and the total number of those tests that were positive. They also report the specimen type, collection location, and week of collection. NREVSS allows for timely analysis of data to monitor viral seasons and circulation patterns.

All data graphs on this site are updated weekly.

NREVSS Dashboard

  1. Select a View Information can be viewed as national data (all participating NREVSS laboratories) or filtered by HHS region, surveillance year, or virus. To view respiratory or enteric virus data, select the respective view.
  2. Select Virus Select one or more viruses.

How it's used

NREVSS was created in the 1980s to monitor seasonal trends in respiratory virus activity and was later expanded to include select enteric viruses. Influenza testing data reported to NREVSS is integrated with CDC Influenza Surveillance.

Each week, participating U.S. laboratories from university and community hospitals, state and county public health departments, and commercial entities voluntarily report:

  • the total number of tests performed
  • the test type used for detection
  • the number of those tests with positive results

Respiratory test results on the dashboard only include results from nucleic acid amplification tests (NAATs), also referred to as polymerase chain reaction (PCR) tests. CDC makes NREVSS data available through this website.

CDC also publishes periodic summaries and alerts based on NREVSS data in CDC's Morbidity and Mortality Weekly Report and other peer-reviewed journals.

NREVSS plays an important role in describing the temporal and geographic circulation patterns of respiratory and enteric viruses-including monitoring changes in the typical annual circulation patterns and identifying viral outbreaks. NREVSS is a relatively simple and practical surveillance system, gathering vital information that informs CDC's activities that treat, prevent, and control respiratory and enteric viral diseases.

Viruses monitored in NREVSS and key surveillance reports

The following viruses are monitored by NREVSS. Additionally, you may find key surveillance reports by virus.


Virus
Key Surveillance Report

SARS-CoV-2, the virus that causes COVID-19

12

Respiratory syncytial virus (RSV)

3456

Influenza viruses

FluView Interactive

Human parainfluenza viruses (PIV) (types 1, 2, 3, and 4)

78910

Human metapneumovirus (HMPV)

1112

Rhinovirus/enterovirus (RV/EV)

13

Respiratory adenoviruses

14

Human coronaviruses (HCOV) (types 299E, NL63, OC43, HKU1)

151617

Rotavirus

1819

Norovirus

N/A
Print
Content Source:
National Center for Immunization and Respiratory Diseases; Coronavirus and Other Respiratory Viruses Division
  1. CDC. Correlations and Timeliness of COVID-19 Surveillance Data Sources and Indicators ― United States, 2020–2023. MMWR 2023; 72:529–535.
  2. CDC. COVID-19 Surveillance After Expiration of the Public Health Emergency Declaration - United States, May 11, 2023. MMWR 2023; 72:523-528.
  3. CDC. Seasonality of Respiratory Syncytial Virus — United States, 2017–2023. MMWR 2023; 72:355–361.
  4. CDC. Respiratory Syncytial Virus Seasonality — United States, 2014–2017. MMWR 2018; 67:71–76.
  5. CDC. Update: Respiratory Virus Surveillance — United States, 1984. MMWR 1984; 33:11.
  6. MMWR Reports since 1984 on Respiratory Syncytial Virus Activity and Respiratory Syncytial Virus Surveillance are searchable here: Reports by Topic | MMWR (cdc.gov). Please note: Publications from 2016 are searchable under Reports by Topic. For those dating before 2016, they are searchable through PubMed.
  7. CDC. Changes in influenza and other respiratory virus activity during the COVID-19 pandemic — United States, 2020–2021. MMWR 2021;70(29).
  8. DeGroote NP, Haynes AK, Taylor C, et al. Human parainfluenza virus circulation, United States, 2011–2019. Journal of Clinical Virology. 2020; 124:104261.
  9. Abedi GR, Prill MM, Langley GE, et al. Estimates of Parainfluenza Virus-Associated Hospitalizations and Cost Among Children Aged Less Than 5 Years in the United States, 1998–2010. Journal of the Pediatric Infectious Diseases Society. 2014;5(1):7-13.
  10. Weinberg GA, Hall CB, Iwane MK, et al. Parainfluenza Virus Infection of Young Children: Estimates of the Population-Based Burden of Hospitalization. The Journal of Pediatrics. 2009;154(5):694-699.e1.
  11. Haynes AK, Fowlkes AL, Schneider E, Mutuc JD, Armstrong GL, Gerber SI. Human Metapneumovirus Circulation in the United States, 2008 to 2014. PEDIATRICS. 2016;137(5): e20152927-e20152927.
  12. Edwards KM, Zhu Y, Griffin MR, et al. Burden of Human Metapneumovirus Infection in Young Children. New England Journal of Medicine. 2013;368(7):633-643.
  13. CDC. Increase in Acute Respiratory Illnesses Among Children and Adolescents Associated with Rhinoviruses and Enteroviruses, Including Enterovirus D68 - United States, July-September 2022. MMWR 2022; 71:1265-1270.
  14. CDC. Surveillance of Human Adenovirus Types and the Impact of the COVID-19 Pandemic on Reporting — United States, 2017–2023. MMWR 2024; 73:1136–1141.
  15. Coronaviruses, Including MERS-CoV and SARS-CoV-1. Published online April 25, 2024:332-334.
  16. Killerby, ME, Biggs HM, Haynes A, et al. Human Coronavirus Circulation in the United States 2014 – 2017. J Clin Virol. 2018 April;101: 52-6
  17. Shah MM, Winn A, Dahl RM, et al. Seasonality of Common Human Coronaviruses, United States, 2014–2021. Emerging Infectious Diseases. 2022;28(10):1970-1976.
  18. Burnett E, Parashar UD, Winn A, Tate JE. Trends in Rotavirus Laboratory Detections and Internet Search Volume Before and After Rotavirus Vaccine Introduction and in the Context of the Coronavirus Disease 2019 Pandemic—United States, 2000–2021. The Journal of Infectious Diseases. 2022;226(6):967-974.
  19. CDC. Trends in the Laboratory Detection of Rotavirus Before and After Implementation of Routine Rotavirus Vaccination — United States, 2000–2018. MMWR 2019; 68:539–543.