FluTrack

Combined respiratory indexUnited States

Reported CDC data

Minimal

The combined flu, RSV and COVID-19 index is minimal for the reported observation period. observations for week ending Oct 3, 2026

Rising +24% in the share of emergency-department visits vs prior-observation mean Minimal 0 FluRSVCOVID-19combined
19 activity index / 100 MinimalLowModerateHighVery High

Flu RSV COVID-19 United States

How bad is it near you, in plain English?

FluTrack summarizes reported flu, RSV and COVID-19 activity in a combined respiratory index for your state. Each reading describes its observation period, with a trend when enough comparable data exists.

CDC surveillance observations NSSPNWSS Observation periods follow source publication schedules Reported CDC data

The U.S. display is an unweighted rollup of available state signals, not an independently published CDC national estimate. State and local trends can differ.

Check your area Report how you feel

This week's CDC data for your county — hospital admissions, wastewater and the state level — plus an anonymous count of how people nearby feel.

Check your area

Leave it blank and we'll use your approximate location. U.S. only.

Report how you feel

Anonymous symptom reports open soon. Until then, check this week's CDC data for your area.

How reports will be handled

Dated observations, not real-time counts

Surveillance data is reported with an inherent lag of roughly one to two weeks. FluTrack shows directional trends, not a real-time case count. The trend compares the latest observation with the mean of up to three prior observations of the same measurement. A build or retrieval date does not establish health conditions on that day. Missing data does not mean no illness. For general information only — not medical advice.

By virus, for the U.S.

The same picture, split into flu, RSV and COVID-19.

Influenza (Flu)

Minimal 0

Rising +63% in the share of emergency-department visits vs prior-observation meanContributing inputs: ED-visit share, wastewater activity index. Observation week ending Oct 3, 2026.

COVID-19

Low 1

Holding steady in the share of emergency-department visits vs prior-observation meanContributing inputs: ED-visit share, wastewater activity index. Observation week ending Oct 3, 2026.

RSV

Minimal 0

Rising +50% in the share of emergency-department visits vs prior-observation meanContributing inputs: ED-visit share, wastewater activity index. Observation week ending Oct 3, 2026.

Underlying signals

Acute respiratory illness activity
CDC NSSP activity category; broader than the three-virus index · Observation week ending Oct 3, 2026 · Publication date not provided by this feed · Retrieved 2026-10-12T06:12:00.473ZMinimal
Combined flu, RSV and COVID-19 ED visits
Share of emergency-department visits; not a case count (NSSP) · Observation week ending Oct 3, 2026 · Publication date not provided by this feed · Retrieved 2026-10-12T06:11:57.655Z1.0%
Wastewater viral activity input
NWSS wastewater index input; not test positivity or hospitalizations · Observation week ending Oct 3, 2026 · Publication date not provided by this feed · Retrieved 2026-10-12T06:12:04.960Z4.5

Laboratory test positivity is unavailable from the implemented live adapter and does not contribute to this reading.

United States activity

Tap or select a state for its full report.

COVID-19 direction, per CDC’s epidemic-trend model (report dated Oct 7, 2026; estimated from emergency-department data through Oct 6, 2026). The U.S. as a whole is classified as not changing. In 49 of 51 jurisdictions (the 50 states and DC), FluTrack shows CDC’s category: 10 are growing or likely growing, 25 not changing and 14 declining or likely declining. The other 2 are withheld or have no CDC estimate; each state page says why. This is direction only, not how much COVID-19 is circulating. How this is shown

ActivityMinimal0Low1Moderate2High3Very High4No data
Alaska — Minimal AK Maine — Minimal ME Vermont — Minimal VT New Hampshire — Minimal NH Washington — Moderate WA Idaho — Minimal ID Montana — Minimal MT North Dakota — Minimal ND Minnesota — Minimal MN Wisconsin — Minimal WI Michigan — Minimal MI New York — Minimal NY Massachusetts — Low MA Rhode Island — Minimal RI Oregon — Low OR Nevada — Minimal NV Wyoming — Low WY South Dakota — Minimal SD Iowa — Minimal IA Illinois — Minimal IL Indiana — Minimal IN Ohio — Minimal OH Pennsylvania — Minimal PA New Jersey — Minimal NJ Connecticut — Moderate CT California — Moderate CA Utah — Minimal UT Colorado — Minimal CO Nebraska — Minimal NE Missouri — Minimal MO Kentucky — Minimal KY West Virginia — Minimal WV Virginia — Low VA Maryland — Minimal MD Delaware — Minimal DE Arizona — Minimal AZ New Mexico — Moderate NM Kansas — Minimal KS Arkansas — Minimal AR Tennessee — Minimal TN North Carolina — Low NC South Carolina — Low SC District of Columbia — Minimal DC Oklahoma — Minimal OK Louisiana — Minimal LA Mississippi — Minimal MS Alabama — Low AL Georgia — Minimal GA Hawaii — Moderate HI Texas — Moderate TX Florida — Minimal FL

Tap or select a state for its full report.

Full state report

Authoritative data, translated

Three steps, no jargon, no login.

We read the CDC

The implemented index feeds are emergency-department visits, the Acute Respiratory Illness activity level and wastewater viral activity. Laboratory positivity is unavailable in live readings; illustrative samples can include it. The CDC's COVID-19 epidemic trend, where available, is shown beside a state's readings and never inside the index.

We combine the signals

Available signals are blended into a transparent 0–4 combined respiratory index. The trend compares the latest observation with the mean of up to three prior observations. See the method

You get a plain answer

State surveillance provides context, with its dates and coverage limits. Missing observations do not mean no illness, and sample data cannot describe current conditions.

Implemented sources and unavailable feeds

A source contributes only where usable observations are available. The underlying signals above list the inputs for the selected reading.

NSSP Public Domain

Emergency department visits

The share of ER visits for respiratory illness (flu, RSV, COVID-19), by state.

NWSS Public Domain

Wastewater viral activity

The CDC's wastewater index — an early indicator that can lead clinical cases by days.

NREVSS Public Domain

Laboratory test positivity — unavailable live

No live adapter is implemented. Positivity appears only in clearly labeled illustrative sample inputs.

NSSP ARI Public Domain

Acute Respiratory Illness level

The CDC's categorical activity level, from Very Low to Very High.

Licensing note

FluTrack deliberately uses only public-domain CDC feeds. We exclude non-commercially licensed datasets (such as WastewaterSCAN, CC BY-NC 4.0) so this free, ad-supported utility stays fully within its rights. More on our sources

Find your state

Alabama Low1 Alaska Minimal0 Arizona Minimal0 Arkansas Minimal0 California Moderate2 Colorado Minimal0 Connecticut Moderate2 Delaware Minimal0 District of Columbia Minimal0 Florida Minimal0 Georgia Minimal0 Hawaii Moderate2
See the respiratory activity map