Influenza Surveillance

Washoe County Health District's Influenza Surveillance Program

The Washoe County Health District's influenza surveillance program is conducted year round. Goals of the program are to characterize the prevailing strains of influenza in the community, to measure the impact of the disease in the community, and to obtain and disseminate information regarding influenza activity to health care providers, the public, and those concerned with influenza control measures.

The influenza surveillance program consists of four major components:

• Weekly reports of influenza-like illness (ILI) to the Communicable Disease Program by selected sentinel healthcare providers. The case definition for ILI is a fever >100°F AND cough and/or sore throat. A patient with fever, chills, body aches, and nasal congestion but no cough or sore throat is not considered to meet the definition of ILI. Sentinel providers include hospital emergency rooms, urgent cares, and a student health center.

• The collection of a limited number of specimens by sentinel health care providers from persons with ILI. The purpose of the laboratory confirmation is to verify which type of influenza virus is circulating in the community.

• Monitoring of influenza, pneumonia, and COVID-19 mortality through death certificates.

• Routine reporting of confirmed hospitalized cases of influenza by all healthcare providers and laboratories. Pediatric influenza-associated deaths are a reportable condition in Nevada. Suspected or confirmed outbreaks of influenza are also reportable. If you suspect an influenza outbreak, report it using the WCHD secure online Outbreak Reporting form: https://washoecountynv.seamlessdocs.com/f/OutbreakReportingForm.

Influenza reports are produced by Washoe County Health District every week during influenza season. This webpage is updated weekly during influenza season to include the newest influenza report. Reports from prior seasons are also maintained on this webpage.

Washoe County Flu Statistics

See how many people in Washoe County have been vaccinated, plus a breakdown by several demographics, by going to this dashboard.The dashboard is run by the Department of Health and Human Services Nevada Division of Public and Behavioral Health (DPBH).

For general information about influenza and influenza vaccination, visit Flu Season Information.

U.S. Weekly Influenza Reports, Current Week

CDC reports

Washoe County Weekly Influenza Reports, Current Season

• Weekly Influenza Report, week 19, 2022-23
• Weekly Influenza Report, week 18, 2022-23
• Weekly Influenza Report, week 17, 2022-23
• Weekly Influenza Report, week 16, 2022-23
• Weekly Influenza Report, week 15, 2022-23
• Weekly Influenza Report, week 14, 2022-23
• Weekly Influenza Report, week 13, 2022-23
• Weekly Influenza Report, week 12, 2022-23
• Weekly Influenza Report, week 11, 2022-23
• Weekly Influenza Report, week 10, 2022-23
• Weekly Influenza Report, week 9, 2022-23
• Weekly Influenza Report, week 8, 2022-23
• Weekly Influenza Report, week 7, 2022-23
• Weekly Influenza Report, week 6, 2022-23
• Weekly Influenza Report, week 5, 2022-23
• Weekly Influenza Report, week 4, 2022-23
• Weekly Influenza Report, week 3, 2022-23
• Weekly Influenza Report, week 2, 2022-23
• Weekly Influenza Report, week 1, 2022-23
• Weekly Influenza Report, week 52, 2022-23
• Weekly Influenza Report, week 51, 2022-23
• Weekly Influenza Report, week 50, 2022-23
• Weekly Influenza Report, week 47-48, 2022-23
• Weekly Influenza Report, week 46, 2022-23
• Weekly Influenza Report, week 45, 2022-23
• Weekly Influenza Report, week 44, 2022-23
• Weekly Influenza Report, week 43, 2022-23
• Weekly Influenza Report, week 42, 2022-23
• Weekly Influenza Report, week 41, 2022-23
• Weekly Influenza Report, week 40, 2022-23

Influenza Reports from Past Seasons

• 2021-2022 ILI Season Summary
• 2020-2021 ILI Season Summary
• Weekly Influenza Reports 2019/2020
• Overview of Hospitalization and Death Data for 2017/2018
• Influenza Season Summary Report 2017/2018
• Weekly Influenza Reports 2018/2019
• Weekly Influenza Reports 2017/2018
• Weekly Influenza Report 2016/2017
• Weekly Influenza Reports 2015/2016

Influenza ("Flu") Season Information

For general information on flu, specific information for healthcare providers and other groups (e.g., childcare, parents, businesses and employees), prevention recommendations, and vaccination opportunities and information see Washoe County’s Clinical and Community Health Services Flu Site.