Division of Communicable Disease Control

California Respiratory Virus Dashboard

What to Know

In California, the amount of combined respiratory illness (Influenza, RSV, and COVID-19) causing people to seek health care is at a low level.

Get vaccinated today for flu, RSV, and COVID-19

For 2025-2026 respiratory virus vaccine information visit CDPH Public Health for All.
To find vaccine sites, check your doctor’s office, pharmacy, local health department, or My Turn - California Vaccine Scheduling Site.

Feeling sick? Take extra care to avoid spreading illness.

For respiratory virus prevention, testing, and treatment visit the CDPH Respiratory Virus Hub.

Updated 9/18/2025

About the Dashboard

Many respiratory viruses, including flu, RSV and COVID-19 circulate year-round in the United States and California. Some viruses are more active from October through March, such as the flu and RSV among many others.

This dashboard shows statewide and regional, weekly respiratory virus data. It provides an overview of activity and severity for flu, RSV, and COVID-19. The data update most Fridays but may change in future updates as more information becomes available. Refer to the How to Navigate the Dashboard section for guidance on utilizing and understanding the dashboard features.

CDPH monitors:

Positive tests data from those who seek healthcare
Emergency department visits for respiratory viruses
Hospitalization rates for flu, RSV, and COVID-19
Vital records data of deceased individuals from these diseases
Presence of respiratory viruses in wastewater

This information allows CDPH to:

Identify changes in disease patterns
Identify level of viruses, if present

How to Navigate the Dashboard

Select a tab at the top to see an overview, test positivity, flu typing, emergency department (ED) visits, hospital admissions per 100,000 persons, deaths, or pediatric deaths.
In the overview tab, select your region to determine the level of respiratory illness and the public health recommendations based on that level. To determine which region your county is in, go to the Regional Public Health Office page or hover over the location of your county on the overview page. You can also select a condition and see the levels for test positivity, hospital admissions, and wastewater concentrations.
Definitions of levels for test positivity and hospital admissions can be seen below (for wastewater levels , see the California Wastewater Surveillance Dashboard):

	COVID-19		Influenza		RSV
	Test Positivity	Hospital Admissions	Test Positivity	Hospital Admissions	Test Positivity	Hospital Admissions
Very Low	<3%	<3	<2%	<1	<1%	<0.5
Low	3-8%	3-13	2-9%	1-4	1-4%	0.5-1.5
Moderate	8-13%	13-23	9-15%	4-6	4-7%	1.5-2
High	13-17%	23-32	15-21%	6-9	7-10%	2-3
Very High	>17%	>32	>21%	>9	>10%	>3

For the test positivity, ED visits, hospital admissions, and deaths tabs, there are two figures; the top figure compares all three conditions over the current season and the bottom compares a selected condition over three seasons. Season is defined as Morbidity and Mortality Weekly report (MMWR) week 27 through week 26 of the following year (July through June).
Using the drop down to the left of each multi-season figure, values can be filtered by:

Condition
Region
Age
Date Display Options*

When multi-select filtering if you deselect all options, the figure still shows the values for selecting all.
The flu-typing and pediatric deaths pages only have one figure. These two pages and the ED visits page do not include all 4 filters.

* The date format for the x-axis of the figures can be changed to display the MMWR week, week-ending date, or month. MMWR is a Centers for Disease Control and Prevention (CDC) report that provides critical updates on public health concerns, disease outbreaks, health behaviors, illness and death rate data and trends. It’s typically used by public health professionals, researchers, policymakers and healthcare providers for decision-making on public health threats. The MMWR week date format allows for a more straightforward comparison to CDC’s report. When selecting the monthly option for date display options, values are averaged for the entire month, even if the current month hasn’t ended.