About Local Health Signal
Local Health Signal answers a simple question: What's going around near me right now, how unusual is it, and what should I know next?
What We Do
We pull data from CDC surveillance systems — ILINet for flu, NREVSS for RSV, NSSP for COVID-19, and more — process it into plain-English summaries, and publish weekly updates for every U.S. state. No jargon, no cluttered dashboards, just clear answers about respiratory illness activity in your area.
Why This Exists
Public health surveillance data is publicly available, but it's spread across multiple CDC systems, published in formats designed for epidemiologists, and rarely contextualized for the general public. Local Health Signal bridges that gap by combining multiple data sources, computing activity levels, and explaining what the numbers mean in plain language.
Our Approach
- Answer first, chart second. Every page leads with a plain-English summary. Charts support the answer, not the other way around.
- Every number has a source. We cite data sources on every page and explain our methodology openly.
- Updated weekly. Our automated pipeline fetches new data every Friday after CDC publishes, so you always see the latest picture.
- State-level detail. National averages hide local variation. We show data for every state so you can see what's happening near you.
What We Are Not
Local Health Signal is not affiliated with the CDC or any government agency. We are not a medical or clinical resource. Our data is for informational purposes only and should not be used for clinical decision making. If you're feeling sick, contact your healthcare provider.