California Respiratory Virus Dashboard

Info for Healthcare Professionals and Local Health Departments Prevention, Testing, and Treatment of Respiratory Viruses

What to Know

CDPH released vaccine recommendations for the 2026–27 respiratory virus season (PDF). Now is the time to stay up to date on respiratory virus immunizations. Speak with your doctor or visit MyTurn to schedule your appointment.
Feeling sick? Visit CDPH's Respiratory Virus Hub to stay informed about prevention, vaccination, testing, and treatment.
For the most up-to-date information including disease trends and interpretations, please view the Respiratory Virus Dashboard below.

About the Dashboard

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

The California Respiratory Virus 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. Refer to the How to Navigate the Dashboard section for guidance on utilizing and understanding the dashboard features.

The Respiratory Virus Dashboard has 3 sections:

Respiratory Virus Snapshot: regional levels for wastewater, test positivity, hospital admissions, and vaccine coverage. Includes an additional tab for vaccine data.
Disease Activity: test positivity, flu typing, and emergency department visits.
Disease Severity: hospital admissions, hospital outlook, death percentages, and pediatric deaths.

To provide feedback on how you use our dashboard and suggestions for improvement, please fill out our survey.

For improved mobile experience of the dashboard, please visit the standalone webpages: Respiratory Virus Snapshot, Disease Acitivity, Disease Severity.

Respiratory Virus Dashboard

The 2026-2027 Respiratory Virus season is from July 5, 2026 through July 3, 2027.

Respiratory Virus Snapshot

Disease Activity

Disease Severity

How to Navigate the Dashboard

Select a tab at the top of each dashboard to see:

An overview
Vaccinations
Test positivity
Flu typing
Emergency department (ED) visits
Hospital admissions
Hospital outlook
Deaths or pediatric deaths

In the overview tab, select your region to determine the level of respiratory illness causing people to seek healthcare.

To determine which region your county is in, go to the Regional Public Health Office page.
On our overview page of the dashboard, you can also select a condition and see the levels for all the regions of California for:

Wastewater concentrations
Test positivity
New admissions
Vaccine coverage

Hover over a region to see the level and value for each metric.

Definitions for test positivity and hospital admissions levels for all ages are shown in the table below. For wastewater level information, see the California Wastewater Surveillance Dashboard. Age-specific levels for test positivity and hospital admissions tabs can be found in the data notes.

	Influenza		RSV		COVID-19
	Test Positivity	Hospital Admissions	Test Positivity	Hospital Admissions	Test Positivity	Hospital Admissions
Very Low	<2%	<1	<1%	<0.6	<2%	<2
Low	2-5%	1-4	1-4%	0.6-1.1	2-7%	2-11
Moderate	5-9%	4-7	4-6%	1.1-1.6	7-11%	11-20
High	9-13%	7-9	6-9%	1.6-2.1	11-16%	20-28
Very High	>13%	>9	>9%	>2.1	>16%	>28

Vaccine data, test positivity, flu typing, hospital admission, and death data have potentially identifiable data suppressed. Weekly data with age and region filters with underlying values <11 are replaced with “Data Suppressed.”
Season is defined as Morbidity and Mortality Weekly report (MMWR) week 27 through week 26 of the following year.

These weeks are usually at the end of June or beginning of July

For the test positivity, ED visits, hospital admissions, hospital outlook, and deaths tabs, there are two figures.

The top figure compares all three conditions for the current season. In the bottom figure you can select the condition and view data for the current and past two seasons.
On the hospital admissions tab there are only two seasons due to changing reporting requirements.
The bottom figure of the hospital outlook page displays observed and predicted admissions for a selected condition for the current season.

Using the drop down to the left of each multi-season figure, values can be filtered by:

Condition
Region
Age
Season
Date Display Options*

When filtering, if you deselect all options on the Region, Age, and Season filters, the figure shows the same data points you would see if you select all.
The vaccine data page only has one figure to compare cumulative doses for the selected virus by season. It has the same filtering options as the other tabs, and only has influenza and COVID-19 data.
The flu-typing page only has a figure for the current season. It has the same filtering options as the multi-season figures, except condition. This tab only has influenza data.
The ED visits page does not include filters for region and age.
The pediatric deaths page has one figure with all conditions and multiple seasons with no additional 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. 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.