Emergency?Trouble breathing, chest pain, confusion, a seizure, or a child who is hard to wake: call 911 or go to an emergency department now.All warning signs
FluHubWeek ending Sep 26, 2026

Week ending Sep 26, 2026 · 2025–26 season

Is flu going around?

A little, and it is starting to rise.

3.4% of flu tests came back positive in the week ending Sep 26, 2026, up from 2.6% the week before. Outpatient flu-like illness is 1.7%, still below the level that marks the season (3.1%).

The 2026–27 season officially begins with the week ending October 10. CDC expects a moderate season, with hospitalizations most likely to peak between December and February.

Check symptomsSee this week's data
Outpatient visits for flu-like illness, by flu seasonUnited States. This season and last, against the typical range since 2010.
  • 2025–26 season
  • 2024–25 season
  • Typical range, 2010–11 to 2024–25 (10th–90th percentile)
  • Typical median
Outpatient visits for flu-like illness, by flu season. United States. This season and last, against the typical range since 2010.0%2.5%5%7.5%10%OctNovDecJanFebMarAprMayJunJulAugSepBaseline 3.1%2025–262024–25
Flu-like illness, share of outpatient visits1.7%prior week 1.6%
Lab tests positive for influenza3.4%prior week 2.6%
New flu hospital admissions2,572prior week 2,044
States at Moderate or higher0of 51respiratory illness activity

What do you need?

I feel sick

A five-question check: how soon to get care, and whether an antiviral could help.

Treatment

Tamiflu, Xofluza, and the other antivirals: who should get one and how soon.

2026–27 vaccines

Who should get which vaccine, how well they work, and what changed in federal policy.

Find a flu shot

Pharmacies, clinics, and health centers near your ZIP code.

Flu in my state

Your state's flu curve against 15 past seasons, hospitalizations, and vaccination rates.

Seasons compared

Every season since 2010 side by side: severity, deaths, and vaccine effectiveness.

Bird flu (H5N1)

CDC's human case count and what the risk is for everyone else.

Press and data

Citation-ready numbers with dates and sources, plus CSV downloads.

Respiratory illness by state

CDC activity level, week ending Sep 26, 2026. Select your state.

ALAKAZARCACOCTDEDCFLGAHIIDILINIAKSKYLAMEMDMAMIMNMSMOMTNENVNHNJNMNYNCNDOHOKORPARISCSDTNTXUTVTVAWAWVWIWY
TerritoriesASGUMPPRVI
Very LowLowModerateHighVery HighNo data

When flu is an emergency

Trouble breathing, chest pain or pressure, confusion, a seizure, not urinating, or a fever or cough that improves then returns worse. In children, also fast breathing, bluish lips, dehydration, or not waking or interacting. All warning signs

FluHub turns CDC's weekly flu surveillance into plain language, with clinical content written to CDC, FDA, and IDSA guidance and reviewed by Parth Bhavsar, MD. How FluHub works.