See what’s going around in the U.S. this week.
A live disease activity map for the United States — wastewater signals, CDC surveillance, and verified news reports in one public dashboard.
This week in brief
Top movers · signals · outbreaks- 1.Influenzarising · 24 states
- 2.Campylobacterrising · 12 states
- 3.Cryptosporidiosisclimbing · 4 states
Disease activity by state
Updated weeklyCDC reporting Week of Sep 14, 2026
For informational use only. This dashboard aggregates public surveillance data (wastewater, case counts, news reports) which may lag, contain errors, or be revised without notice. Confirm with local health authorities before making health decisions. See Terms and Medical Disclaimer.
Colors show overall activity for the week — combining wastewater signals, CDC case data, and news reports. Each disease keeps its own wording in the state detail (wastewater: Elevated / Moderate; case counts: Increasing / Rising).
51 states with activity data for the current filter
Click a state for detail
Selected state detail
Want this, personalized to you?
The Observatory shows state-level trends. The app turns that into a personal score based on your location, age, health conditions, vaccinations, and plans.
- A personal risk score built from live surveillance data and your health profile
- WavePredict wave forecasts from wastewater and case trends
- Plain-language guidance on what to do next — awareness, not alarm
Illustration of the daily risk score in the app.
Wastewater and case-based surveillance are published on a 7–13 day lag by CDC; news and outbreak signals are current.