See what’s going around in Illinois this week.
A live disease activity map for Illinois — 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
Detail · IL
Click another state to changeActivity data for IL as of Sep 14.
Illinois
Data as of week of Sep 14, 2026 · 16 tracked diseases
- ChlamydiaLast 16 weeksRising
Case surveillance · CDC NNDSS
NNDSS elevated (primary) · Wastewater n/a · NNDSS elevated (-96%) · News 0 clusters
NNDSS: elevated (-96%) - GonorrheaLast 16 weeksRising
Case surveillance · CDC NNDSS
NNDSS elevated (primary) · Wastewater n/a · NNDSS elevated (-97%) · News 0 clusters
NNDSS: elevated (-97%) - DengueLast 16 weeksMonitoring
Case surveillance · CDC NNDSS
NNDSS elevated (primary) · Wastewater n/a · NNDSS elevated (+50%) · News 0 clusters
NNDSS: elevated (+50%) - LegionellaLast 16 weeksReported
Verified news reports
News 1 cluster (primary) · Wastewater n/a · NNDSS falling · News 1 cluster
News: 1 recent cluster - MpoxLast 16 weeksMonitoring
Case surveillance · CDC NNDSS
NNDSS elevated (primary) · Wastewater n/a · NNDSS elevated (+50%) · News 0 clusters
NNDSS: elevated (+50%) - Whooping CoughLast 16 weeksMonitoring
Case surveillance · CDC NNDSS
NNDSS elevated (primary) · Wastewater n/a · NNDSS elevated (+50%) · News 0 clusters
NNDSS: elevated (+50%) - West Nile VirusLast 16 weeksMonitoring
Case surveillance · CDC NNDSS
NNDSS elevated (primary) · Wastewater n/a · NNDSS elevated (+50%) · News 0 clusters
NNDSS: elevated (+50%) - CampylobacterLast 16 weeksRising
Case surveillance · CDC NNDSS
NNDSS rising (primary) · Wastewater n/a · NNDSS rising · News 0 clusters
Cases: trending up - CryptosporidiumLast 16 weeksRising
Case surveillance · CDC NNDSS
NNDSS rising (primary) · Wastewater n/a · NNDSS rising · News 0 clusters
Cases: trending up - MalariaReported
Verified news reports
News 1 cluster (primary) · Wastewater n/a · NNDSS null · News 1 cluster
News: 1 recent cluster - MeaslesLast 16 weeksReported
Verified news reports
News 1 cluster (primary) · Wastewater n/a · NNDSS stable · News 1 cluster
News: 1 recent cluster - COVID-19Last 90 daysCalm
Wastewater concentration · CDC NWSS
Wastewater monitored, no elevation
Wastewater: low - H5N1 Bird FluCalm
Wastewater concentration · CDC NWSS
Wastewater monitored, no elevation
Wastewater: low - InfluenzaLast 90 daysCalm
Wastewater concentration · CDC NWSS
Wastewater monitored, no elevation
Wastewater: low - RSVLast 90 daysCalm
Wastewater concentration · CDC NWSS
Wastewater monitored, no elevation
Wastewater: low - TuberculosisLast 16 weeksMonitoring
Case surveillance · CDC NNDSS
NNDSS falling (primary) · Wastewater n/a · NNDSS falling · News 0 clusters
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.
